Every tool in the directory
398 observability, monitoring and alerting tools. Filter by what a tool does, whether it has a free plan, and whether you can run it yourself. Checked 30 September 2026.
- Observability
- Platforms (22)
- Metrics (11)
- Logs (25)
- Tracing and APM (22)
- Errors (22)
- Profiling (13)
- RUM and replay (28)
- Pipelines (22)
- Dashboards (9)
- LLM observability (22)
-
Observability for AI agents: records agent sessions with LLM calls, tool use and costs so you can replay and debug runs; SDK and app are open source.
-
Long-running error and performance monitoring service that groups exceptions, links them to deploys and alerts by email or chat. Error and performance quotas are billed separately.
-
Akamai real user monitoring that measures page and app performance from real visitors and links it to business metrics such as conversions and bounce rate.
-
Flow collector and visualizer that receives NetFlow, IPFIX and sFlow, enriches flows with interface and routing data, stores them in ClickHouse and shows them in a web UI.
-
Self-hosted alert console that collects alerts from Prometheus, Nagios, Zabbix, CloudWatch and others, deduplicates and correlates them, and shows them in one web UI with an API and CLI.
-
On-call rosters, escalation policies and paging by mobile push, SMS, WhatsApp, Telegram, Slack and email, with uptime, heartbeat and SSL checks and hosted status pages. Priced per server rather than per user.
-
Alert management and on-call service that runs incoming alerts through schedules and escalation policies and notifies people by voice, SMS, email and push, with workflow automation on higher plans.
-
Alibaba Cloud's monitoring service for its cloud resources and hybrid environments, with metrics, event alerts and support for Prometheus, Grafana and OpenTelemetry data.
-
On-call and incident management tool with calendars, rotations, overrides, escalations, phone and SMS alerts and a mobile app; status pages come with the Pro plan.
-
AWS's native monitoring service: collects metrics and logs from AWS services and your apps, with alarms, dashboards, synthetic canaries and application signals.
-
AWS profiling agent for JVM and Python apps on EC2, ECS, EKS and Lambda that finds the most expensive code paths and suggests fixes. Billed per sampling hour after a 90-day free tier.
-
Fully managed Grafana workspaces on AWS with IAM Identity Center login and built-in CloudWatch, Prometheus and X-Ray data sources, billed per active user.
-
Serverless, Prometheus-compatible metrics store on AWS: remote-write metrics from EKS or other clusters and query them with PromQL.
-
Agentless monitoring system from the Apache Software Foundation that polls servers, databases, middleware, network devices and websites through templates, with built-in alerting.
-
APM for distributed systems from the Apache Software Foundation: agents and service mesh probes collect traces, metrics and logs and draw service topology maps.
-
Python library, CLI and API server that sends one notification to many services such as Telegram, Discord, Slack, email and SMS gateways using URL-style targets.
-
APM for Ruby, Elixir, Node.js, Python, PHP, Go and front-end JavaScript that combines performance, errors, logs, host metrics, uptime checks and cron check-ins.
-
Arize's hosted AI observability and evaluation platform for agents and ML models: tracing, online evals, monitors and dashboards.
-
Source-available LLM tracing and evaluation tool built on OpenTelemetry and OpenInference; run it locally, in a notebook or on your servers to inspect traces and score outputs.
-
API testing and monitoring: define HTTP requests with assertions, run them on a schedule or after each deploy, and get alerted when a check fails.
-
Full-stack observability SaaS with APM, real user monitoring, logs, infrastructure and synthetic monitoring, priced without per-user fees.
-
Hosted public, private and audience-specific status pages with incident and maintenance updates, component status and email, SMS and webhook subscriptions.
-
Cloud-managed network monitoring that discovers and maps switches, routers and firewalls, tracks traffic and alerts on device problems.
-
AWS-supported distribution of the OpenTelemetry Collector and SDKs, preconfigured to send traces and metrics to CloudWatch, X-Ray, Amazon Managed Prometheus and partner backends.
-
AWS service for response plans, on-call contacts and escalation plans, engagement by SMS and voice, and runbook automation through Systems Manager.
Closed to new customers from 2025-11-07; existing accounts keep working but get no new features.
-
Hosted event store for logs, traces and other event data, queried with the APL language, with dashboards and monitors. Integrates with Vercel, Cloudflare and OpenTelemetry.
-
Managed Grafana service on Azure with Entra ID sign-in and Azure Monitor, Azure Data Explorer and Prometheus data sources set up.
-
Microsoft Azure's monitoring service for metrics, logs and traces from Azure resources and apps, including Application Insights, Log Analytics, alerts and managed Prometheus.
-
Crash and error reporting from Sauce Labs for native apps, game engines, consoles and servers, including minidump and core dump processing.
-
Open source iOS app for push notifications: send a request to a URL and it arrives as a push on your iPhone, through a server you can self-host.
-
Lightweight self-hosted server monitor: a small agent reports CPU, memory, disk, network and Docker container stats to a hub that keeps history and sends alerts.
-
Observability suite that pairs uptime checks, logs and metrics with on-call schedules, escalation policies, phone and SMS alerts and hosted status pages.
-
Better Stack's log, metric and trace store built on ClickHouse, queried with SQL or a live-tail view. Shares an account with Better Stack uptime and on-call.
-
Event correlation platform for large IT operations teams that ingests alerts from many monitoring tools, groups related ones into incidents and adds topology and change context.
-
Telemetry pipeline built on OpenTelemetry: manages fleets of collectors from one console and filters, samples and routes logs, metrics and traces to any backend. Cloud or self-hosted.
-
Prometheus exporter that probes endpoints over HTTP, HTTPS, DNS, TCP, ICMP and gRPC and exposes the results as metrics you can alert on.
-
Profiler and performance monitoring for PHP and Python: on-demand profiles, continuous profiling in production, and performance assertions that can run in CI.
-
Hosted monitoring for servers, containers and Kubernetes built on an open source agent, with uptime checks, dashboards and alert rules.
-
Real user and synthetic monitoring for e-commerce sites that ties page speed, errors and third-party tags to lost revenue and conversions.
-
Open source JavaScript library, maintained by Akamai, that measures page load and user-perceived performance in real browsers and beacons the timings to a server you choose.
-
Kubernetes ChatOps bot that posts cluster events and alerts to Slack, Discord or Mattermost and lets you run kubectl from chat.
Commercial Botkube Cloud ended 2024-11-05; open source edition continues but has had no commits since 2024-11-15. Source code
-
Evaluation and observability platform for AI products: logs production traces, runs evals and scorers, and offers a prompt playground and datasets.
-
Remote logging for mobile and web apps: the SDK sends device logs to the cloud so you can read what happened on a user's device, with crash reports and user feedback.
-
In-app bug and crash reporting for mobile apps that attaches a video of the user's last actions, network traffic and logs to every report.
-
Sentry-SDK-compatible error tracker built to self-host as a single container on modest hardware. Groups errors into issues and sends chat or webhook alerts.
-
SmartBear's error and crash monitoring for mobile, web and backend apps, known for stability scores per release. Adds performance spans.
-
Crash reporting for C++, .NET, games and desktop apps: collects minidumps and symbol files and shows the call stack at the moment of the crash.
-
Self-hosted monitoring and alerting app that watches Graphite metrics, Jenkins jobs and HTTP endpoints and alerts the person on duty by phone, SMS or email.
README says Cabot is not actively maintained; last commit 2023-09-10. Source code
-
Self-hosted status page system built on Laravel, with components, incidents, scheduled maintenance, metrics and subscriber notifications.
-
Network graphing tool built on RRDtool: polls devices over SNMP or scripts and draws long-term graphs of traffic and system metrics.
-
Google's container advisor: a daemon that collects resource usage and performance data for running containers and exposes it to Prometheus. Built into the kubelet.
-
Web performance monitoring with real user monitoring, scheduled synthetic page speed tests and Chrome UX Report data, plus budgets and alerts.
-
Enterprise internet performance monitoring: synthetic tests run from backbone, cloud and ISP nodes worldwide, alongside real user and BGP monitoring.
-
IT infrastructure and network monitoring platform that runs Nagios-compatible plugins, offered as open source and as commercial on-premises and cloud editions.
-
Self-hosted open source monitor for HTTP, ping, TCP and DNS uptime, server metrics and SSL expiry, with incident tracking and public status pages.
-
Synthetic monitoring for developers: API checks and Playwright browser checks written as code, deployed from CI and run from many regions.
-
Self-hosted open source monitor from BlueWave Labs for HTTP, ping, TCP port, DNS, WebSocket and gRPC checks, with an optional agent for server hardware metrics and status pages.
-
Infrastructure monitoring for servers, networks, cloud and containers with automatic service discovery; the base edition is open source and paid editions add more.
-
InfluxData's web UI for InfluxDB 1.x: builds dashboards over InfluxQL queries and manages Kapacitor alert rules.
-
Hosted observability for metrics, traces and logs at large scale, with controls to shape and cut telemetry volume. Now owned by Palo Alto Networks.
-
Log pipeline from the creators of Fluent Bit (formerly Calyptia): manages Fluent Bit agent fleets and transforms, reduces and routes logs to observability and SIEM backends.
-
AI SRE agent that investigates production alerts on its own by querying observability and infrastructure tools, then reports findings and likely causes to the on-call engineer.
-
ClickHouse's open source observability stack built on HyperDX: logs, traces, metrics and session replays stored in ClickHouse and searched from one UI.
-
Privacy-first, cookie-free site analytics from Cloudflare that also reports real-user Core Web Vitals per page; works on sites not proxied by Cloudflare too.
-
Active prober that started at Google: runs HTTP, DNS, ping, TCP, gRPC and custom probes and exports latency and success metrics to Prometheus and other backends.
-
Severalnines platform to deploy, monitor and manage open source database clusters such as MySQL, PostgreSQL, MongoDB and Redis on your own servers or cloud.
-
Evaluation and observability platform from the makers of the open source DeepEval library: LLM tracing, regression tests in CI, and red teaming.
-
Digital experience analytics platform with session replay, heatmaps, journey analysis and error and speed analysis; Hotjar is now part of it.
-
Observability SaaS for logs, metrics, traces and security data that processes data in-stream and keeps it in your own object storage.
-
Real user monitoring for Core Web Vitals with element-level attribution, CrUX cross-checks, alerts and an MCP server so coding agents can read the data.
-
Open source observability that uses eBPF to build service maps and collect metrics, logs, traces and profiles without code changes, with root-cause hints.
-
Horizontally scalable, multi-tenant long-term storage for Prometheus metrics; a CNCF project.
-
Telemetry pipeline (Cribl Stream, Edge, Search and Lake) that filters, reshapes and routes logs between collectors and destinations such as Splunk or S3 to cut volume.
-
Heartbeat monitoring for cron jobs with HTTP uptime and TLS expiry checks, plus Laravel, Python and Node packages that create checks from code.
-
Monitoring for cron jobs, background workers and scheduled tasks that tracks run duration and failures, plus website uptime checks and status pages.
-
Index-free log store (formerly Humio) that compresses and searches large log volumes quickly; sold by CrowdStrike for security and operations logging.
-
Static status page generator built on Hugo; incidents are Markdown files and the site can be hosted free on Netlify, GitHub Pages or similar.
-
Runbook platform for large organisations that turns disaster recovery, cloud migration, release and major-incident procedures into shared, partly automated task lists.
-
OpenTelemetry-native observability SaaS for traces, logs and metrics, with PromQL queries, synthetic API checks and configuration as code.
-
SaaS monitoring platform covering infrastructure, APM, logs, RUM, synthetics, security and incident management, collected mostly through one agent.
-
Paging built into Datadog: on-call schedules, escalation policies and pages by phone, SMS and the Datadog mobile app, linked to Datadog monitors and incidents.
-
Dead man's switch for cron jobs and scheduled tasks: each job checks in to a unique URL, and a missed check-in triggers an alert.
-
APM for Ruby on Rails apps installed as a gem: request traces, slow SQL and N+1 query detection, and error tracking, priced by requests.
-
Website performance monitoring that combines real user Core Web Vitals data, scheduled Lighthouse lab tests and Google CrUX data, with alerts on regressions.
-
Built-in metrics and alert policies for DigitalOcean Droplets and other resources, collected by a small agent, at no extra charge.
-
Netflix's open source incident management tool that creates Slack channels, documents and tickets for each incident and tracks roles, tasks and timelines.
Netflix archived the repository in September 2025 (announced for 2025-09-01); no further changes. Source code
-
Remote network monitoring for MSPs and IT teams: a collector on each site discovers devices and alerts on outages and SNMP metrics.
-
Synthetic monitoring for websites, web applications, APIs and servers, including recorded multi-step browser transactions and load testing.
-
Website uptime monitoring with downtime alerts and a generous free plan, aimed at small sites and people watching many client websites.
-
Small web UI that streams and searches live Docker container logs across hosts, with no log storage. Optional Dozzle Cloud adds grouped alerts and log analysis.
-
Cron job, heartbeat and uptime monitoring with incident tracking and status pages, billed by check-in volume rather than monitor count.
-
Enterprise observability platform that instruments hosts and apps automatically through its OneAgent, maps dependencies and points to likely root causes; also offered as self-managed Dynatrace Managed.
-
Telemetry pipelines that process logs, metrics and traces at the edge before they reach a backend, now sold alongside AI agents for root-cause investigation.
-
Rule-based alerting on Elasticsearch and OpenSearch data: queries indices on a schedule and sends matches to email, Slack, PagerDuty and many other outputs.
-
Logs, metrics, APM traces and synthetics built on Elasticsearch and Kibana, run yourself or on Elastic Cloud.
-
Elasticsearch, Logstash, Kibana and Beats: full-text indexing and search of logs with Kibana dashboards and alerting. Self-host the free distribution or buy Elastic Cloud.
-
Flow and SNMP collector that ships network flow records to Elasticsearch, OpenSearch and other stores, with ready-made dashboards and security detections.
-
Error logging for .NET web apps (ASP.NET Core, Blazor and others) with deployment tracking, uptime checks and heartbeats.
-
Mobile and web app monitoring built on OpenTelemetry: crashes, ANRs, network calls and full user session timelines for iOS, Android, React Native and Unity.
-
Self-hosted Rails app that receives errors from Airbrake-compatible clients, groups them and emails or notifies your team.
-
Rulebooks that listen to events from monitoring tools, webhooks or Kafka and trigger Ansible playbooks, used for automatic remediation. Open source core, supported in Red Hat Ansible Automation Platform.
-
Open source .NET-first error, log and feature-usage reporting with a hosted service or free self-hosting. Groups events into stacks and notifies on new or regressed errors.
-
Google's crash reporter for iOS, Android, Flutter and Unity apps. Groups crashes by root cause and highlights new or regressed issues; no cost on any Firebase plan.
-
Incident management platform with runbooks, Slack and Teams incident channels, retrospectives and status pages. Bought Blameless in 2024 and agreed to join Freshworks in December 2025.
-
FireHydrant's alerting and on-call product: schedules, escalation policies and alert rules that page responders and open FireHydrant incidents. Included from the Pro plan up.
-
Linux server monitoring with a lightweight agent, real-time dashboards and alerts, plus uptime monitors and a Terraform provider.
-
Uptime, SSL, DNS and page-content monitoring that confirms an outage from several regions before alerting, with cron checks and status pages.
-
Lightweight C log and metrics processor from the Fluentd project, common as the node-level agent in Kubernetes. Ships to Loki, Elasticsearch, cloud logging and OTLP.
-
CNCF graduated log collector that reads, parses, buffers and forwards logs to hundreds of outputs through a plugin system. Written in Ruby and C.
-
Quest's monitoring suite, best known for database performance monitoring across SQL Server, Oracle, PostgreSQL and other engines, with workload analysis and alerting.
-
Community-maintained open source Kubernetes desktop IDE, forked from OpenLens, for managing clusters and viewing workloads, metrics and logs.
-
Digital experience analytics built on session replay: records web and mobile sessions, flags frustration signals and errors, and lets you search and segment users by behaviour.
-
Open source platform to trace, evaluate, simulate and guard LLM and agent apps, including an AI gateway.
-
AI evaluation and observability platform with tracing, evaluation metrics and real-time guardrails for agents; hosted, VPC or on-prem.
-
Health dashboard configured in YAML: checks HTTP, TCP, DNS, ICMP and other endpoints against conditions on status, body and latency, and alerts to many channels. Also sold as a hosted service.
-
Cross-platform system monitor in Python that shows CPU, memory, disk, network, processes and containers in a terminal, a web UI or a REST API.
-
Enterprise session replay and digital experience analytics for web and mobile apps, with struggle detection and data retention aimed at regulated industries.
-
Open source error tracker that accepts events from Sentry SDKs, with simpler infrastructure than self-hosted Sentry. Also does basic uptime checks. Hosted or self-hosted.
-
Open source on-call scheduling, escalation and paging service built at Target, with SMS and voice through Twilio, a web UI and a GraphQL API.
-
Google Cloud's managed Prometheus backend on Monarch: collect with managed or self-deployed collectors, query with PromQL, billed per sample ingested.
-
Google Cloud's suite (formerly Stackdriver) of Cloud Monitoring, Logging and Trace for metrics, logs, uptime checks and alerting on Google Cloud and other environments.
-
Google Cloud statistical profiler for Go, Java, Node.js and Python services that samples CPU and heap in production and shows flame graphs in the console. Google lists no charge for it.
-
Self-hosted server for sending and receiving push messages over a REST API and websocket, with a web UI and an Android client.
-
Open source system-wide profiler from Intel (built by Granulate) that merges several language profilers into one flame graph per host; a local backend and UI are published separately.
-
Open source dashboards and alerting over Prometheus, Loki, Elasticsearch, SQL databases and many other data sources.
-
Grafana's OpenTelemetry Collector distribution with built-in Prometheus scraping and a pipeline configuration language; collects metrics, logs, traces and profiles. Replaces Grafana Agent.
-
Grafana Labs' hosted stack: Grafana with managed Prometheus-compatible metrics, Loki logs, Tempo traces, profiles, synthetic checks and IRM.
-
Grafana Cloud's incident response and on-call service: schedules, escalation chains, alert grouping, Slack incident channels and a mobile app, next to Grafana alerting.
-
Open source web SDK for frontend observability: captures page performance, Web Vitals, errors, logs and traces from browsers and sends them to Grafana Cloud or a self-run Alloy and Loki stack.
-
Log aggregation system that indexes only labels, not full log text, and stores chunks in object storage. Queried with LogQL from Grafana; hosted as part of Grafana Cloud.
-
Horizontally scalable, multi-tenant long-term storage for Prometheus metrics from Grafana Labs, backed by object storage.
-
Self-hosted edition of Grafana OnCall with schedules, escalation chains and alert grouping. No longer developed; Grafana Cloud IRM is the supported successor.
Maintenance mode from 2025-03-11; repository archived 2026-03-24. Hosted product continues as Grafana Cloud IRM. Source code
-
Continuous profiling database that collects CPU, memory and other profiles from running applications so you can find hot code paths over time.
-
Distributed tracing backend that stores traces cheaply in object storage and accepts OpenTelemetry, Jaeger and Zipkin data.
-
Time-series metrics storage and graphing: Carbon receives metrics, Whisper stores them, and Graphite-web renders graphs and serves a query API.
-
Centralised log collection with parsing pipelines, stream routing, search and alert conditions. Graylog Open is free to self-host; paid editions add security analytics and archiving.
-
Pipeline that sits in front of Datadog, Splunk or New Relic, summarises repetitive logs and traces before they are indexed, and keeps raw data in S3 for backfill during incidents.
-
Kubernetes observability that uses an eBPF sensor and runs in your own cloud account, covering logs, traces, metrics and APM without code changes.
-
Incident response module in the Harness platform that gathers alerts and change events, runs response workflows and uses AI agents to suggest causes.
-
Kubernetes web UI and desktop app, now a Kubernetes SIG UI project, for browsing cluster resources, logs and events, extensible with plugins.
-
Cron job and heartbeat monitoring: each job pings a unique URL, and a missed or late ping sends an alert. The server is open source and can be self-hosted.
-
Open source LLM proxy and logging: point your provider base URL at it to record every request with cost, latency and user, plus caching and rate limits.
Acquired by Mintlify 2026-03-03; service kept live in maintenance mode (security, bug fixes, new models). Source code
-
Uptime monitoring for websites and servers checked every minute from 12 locations, with an optional server agent, status pages and IP/domain blacklist monitoring.
-
Open source agent that investigates alerts by querying Kubernetes, Prometheus, logs and other sources with an LLM and summarises likely root causes. CNCF sandbox project started at Robusta.
-
Error tracking for Ruby, Elixir, PHP, Python and JavaScript apps, bundled with uptime checks, cron check-ins and log insights in one account.
-
Observability built for high-cardinality event data: query traces and events by any field to work out why production behaves the way it does.
-
Open source tail-based sampling proxy for traces: buffers whole traces and keeps errors, slow requests and a sample of the rest before forwarding to Honeycomb.
-
Observability and evaluation platform for AI agents: OpenTelemetry-based tracing, automated and human evals, prompt versioning and production monitoring.
-
Network observability layer for Cilium that shows service dependencies, network flows and DNS and HTTP traffic between Kubernetes workloads, using eBPF.
-
Hosted status page service that updates component status automatically from its own checks and from integrations, with usage-based pricing per component.
-
Uptime, browser and cron job monitoring bundled with status pages and incident updates, plus a small server monitoring agent.
-
Managed monitoring service on IBM Cloud for metrics from infrastructure, Kubernetes clusters, cloud services and applications, with dashboards and alerts.
-
Enterprise APM and observability that discovers services automatically and traces every request across them.
-
Monitoring system that grew out of Nagios: checks hosts and services with plugins, scales across distributed zones, and is configured through files or an API.
-
Incident management platform with on-call schedules, escalation policies, voice and SMS alerts, live call routing, alert grouping and status pages.
-
Self-hosted Slack or Matrix bot for incident response: opens channels, tracks severity, status and roles, posts a digest and builds postmortem documents.
-
Incident management run from Slack or Microsoft Teams: declares incidents, assigns roles, keeps timelines, automates workflows and drafts postmortems, with status pages and on-call.
-
On-call module of incident.io: schedules, escalation paths, alert routing and a mobile app for paging, feeding straight into incident.io incidents.
-
Status page aggregator that watches the public status pages of cloud and SaaS providers and alerts you in Slack, Discord, Teams or email when a dependency has an incident.
-
Time-series database for metrics and events; InfluxDB 3 Core is open source, with Enterprise and managed cloud editions.
-
Code-level monitoring for PHP apps (Laravel, Symfony, CodeIgniter, Drupal) that shows transactions, database queries and errors as they happen.
-
CNCF project of eBPF-based tools (gadgets) for inspecting and debugging Kubernetes workloads and Linux hosts, from network traces to process and file activity.
-
Hosted status pages with incident and maintenance updates, subscriber notifications, custom domains and built-in uptime monitors.
-
LinkedIn's open source paging engine: escalation plans that deliver messages by email, Slack, SMS and phone call. Pairs with LinkedIn Oncall for schedules.
-
Status page aggregator that tracks the official status pages of cloud and SaaS vendors, alerts on their outages and can publish your own status page.
-
CNCF distributed tracing platform for collecting, storing and exploring request traces across microservices; version 2 is built on the OpenTelemetry Collector.
-
Atlassian's service desk product. It now holds the alerting, on-call schedule and escalation features moved over from Opsgenie, next to tickets and incidents.
-
CLI and operator that scans Kubernetes clusters for problems and explains them in plain language using an LLM backend of your choice. CNCF sandbox project.
-
Terminal UI for Kubernetes that lists and watches cluster resources in real time and lets you view logs, exec into pods and act on resources with keystrokes.
-
Dashboard for Prometheus Alertmanager that combines alerts from several Alertmanager instances, groups them and makes silences easy to manage.
-
Open source alert management tool that pulls alerts from many monitoring sources, deduplicates and correlates them, and runs workflows on them. Acquired by Elastic in 2025.
-
Self-hosted status page with built-in monitors, incident management and a Docker image, written in SvelteKit and Node.js.
-
Network observability SaaS that analyzes flow, BGP and device data to show traffic, performance problems and DDoS attacks.
-
Commercial platform for Kubernetes troubleshooting and operations that tracks changes and health across clusters and uses AI agents to investigate and fix issues.
-
Kubernetes add-on that listens to the API server and exposes the state of objects such as deployments, pods and nodes as Prometheus metrics.
-
The former official web UI for viewing and managing workloads and resources in a Kubernetes cluster.
Repository archived in January 2026 for lack of maintainers; its README points users to Headlamp. Source code
-
Exports Kubernetes events to sinks such as Slack, Opsgenie, Elasticsearch, Kafka or webhooks, so events can be kept and alerted on.
-
Captures and dissects API traffic between Kubernetes pods (HTTP, gRPC, Kafka, DNS and more) so you can inspect requests cluster-wide, like Wireshark for Kubernetes.
-
Kubernetes watcher that reports resource changes in the cluster to Slack, Mattermost and other chat channels or to a webhook.
-
Self-hosted uptime and SSL certificate monitor with brandable public or private status pages, maintenance windows and alerts to common chat and email channels.
-
Open source observability for AI agents: OpenTelemetry-based tracing, evaluations and analysis of agent runs, self-hostable or cloud.
-
Open source LLM engineering platform: traces LLM and agent calls, manages prompts, runs evaluations and tracks cost and latency. Self-host or use the cloud; acquired by ClickHouse in 2026.
-
LangChain's platform for tracing, evaluating and monitoring LLM apps and agents, usable with or without LangChain; also hosts agent deployments.
-
Open source LLMOps platform: traces LLM and agent runs, runs evaluations and agent simulations, and helps optimize prompts; cloud or self-managed.
-
Telemetry data platform for high-cardinality metrics, logs and traces, compatible with Prometheus and OpenTelemetry.
-
Dead man's switch monitoring for cron jobs, CI pipelines and AI agents, with an MCP server so agents can set up their own monitors.
-
Open source platform to trace, monitor and evaluate AI agents in production, with prompt management; self-host or use the hosted plans.
-
Desktop Kubernetes IDE for browsing clusters, resource metrics and logs across many clusters. Free for individuals and small organizations; paid plans add team and enterprise features.
-
Network monitoring system with automatic SNMP discovery, graphs and alerting, supporting a long list of network hardware vendors.
-
Open source on-call scheduler from LinkedIn with round-robin rotations, shift swaps and overrides, and shift reminders. Paging is handled by its sibling project Iris.
-
Terminal log file navigator that merges several log files into one timeline, highlights errors, and lets you query log lines with SQL. Runs locally, no server.
-
Log ingestion and search backed by Google BigQuery, popular with Cloudflare Workers, Vercel and Elixir apps. Now part of Supabase and open source.
-
SolarWinds hosted log management: ship logs over syslog or HTTP, search and filter them, and build charts and email alerts on the paid plans.
-
Hosted monitoring for hybrid infrastructure: collectors discover networks, servers, cloud services and containers and alert on metrics and logs.
-
Session replay for web and mobile apps, with error monitoring and product analytics attached, so an error comes with a recording of what the user did.
-
Hosted observability platform that grew out of managed ELK: log search and alerting on OpenSearch, plus metrics and traces. Priced per GB ingested.
-
Akamai Cloud (Linode) system graphing service: an open source agent reports CPU, memory, disk and network per process. Longview Pro adds 1-minute data and full history.
-
Mobile app observability, formerly Instabug (renamed 2025): crash reporting, app performance, in-app bug reports and user feedback for iOS and Android.
-
Troubleshooting for serverless and container apps with automatic distributed tracing that captures request and response payloads across AWS Lambda and other services.
-
SMTP gateway that turns incoming emails into Apprise notifications, so devices that can only send email alerts can reach push, chat and other services.
-
ManageEngine's cloud SIEM that collects logs from servers, network devices and cloud services for search, audit reports and compliance reporting. Has a Free edition.
-
On-premises network and server monitoring for routers, switches, firewalls, Windows and Linux hosts and virtual machines.
-
Uptime, SSL, domain, cron and agent-based server monitoring aimed at agencies, with client-facing status pages.
-
Device reliability platform for embedded and IoT fleets: remote crash and coredump collection, device metrics and over-the-air update management.
-
Cluster-wide aggregator of CPU and memory usage from kubelets, serving the Metrics API used by kubectl top and the Horizontal Pod Autoscaler.
-
Telemetry pipeline (formerly LogDNA) that ingests, deduplicates, enriches and routes logs, metrics and traces, with an AI SRE agent that uses the cleaned data for root-cause analysis.
-
Free session recordings and heatmaps from Microsoft, with rage-click and dead-click detection and JavaScript error markers on recordings. No traffic caps.
-
Full-stack observability SaaS covering infrastructure, APM, logs, RUM and synthetic checks, priced by data volume.
-
Command-line synthetic monitor from Hyperjump: define HTTP, TCP, ping and database probes in a YAML file, run them anywhere, and send alerts to many channels.
-
Small Unix daemon that watches processes, files, filesystems and hosts and can restart a service or send an alert when a check fails. M/Monit is the paid central console.
-
Hosted Linux server monitoring with a one-command install of an open source OpenTelemetry-based agent, default alert rules, and alerts by email, Telegram, Discord, Slack, ntfy, webhook or PagerDuty.
-
Uptime monitoring for websites and API endpoints with SSL, keyword, HTTP status and response-time checks, plus shareable dashboards.
-
AIOps event correlation tool that cuts alert noise by clustering related events into situations. Owned by Dell since 2023 and sold as part of Dell APEX AIOps.
-
Networked resource monitoring: a master polls lightweight node agents and their plugins and graphs server metrics over time.
-
Official Prometheus exporter for MySQL and MariaDB that exposes server status, InnoDB and replication metrics.
-
Fork of the Nagios 4 core with performance improvements, compatible with Nagios configuration files and plugins.
-
Long-running open source host and service checker with a large plugin ecosystem; Nagios XI is the commercial edition built on it.
-
Self-hosted scanner that discovers devices on your network and alerts when new, unknown or offline devices appear.
-
AdRem Software's agentless network monitoring system for devices, servers and services over SNMP, WMI and other protocols, with maps, dashboards and alerting.
-
Per-second metrics for servers, containers and applications from an agent with built-in dashboards and alerts, plus the optional hosted Netdata Cloud.
-
Open source network management tool that discovers switches and routers over SNMP and lets you locate devices by MAC or IP, browse ports and track inventory.
-
Network and infrastructure management system with SNMP discovery, network maps, server agents and event correlation; an Enterprise edition adds support and features.
-
AI SRE product that investigates alerts and incidents by querying your existing telemetry and cloud tools, and reports probable causes; priced per investigation rather than per token.
-
SaaS observability platform for APM, infrastructure, logs, browser and mobile monitoring and errors, priced by data ingest and user type.
-
Self-hosted monitoring panel for small server fleets: agents report host status and resource use, and the panel can run uptime checks and remote tasks.
-
Open source alerting and dashboard platform that sits on Prometheus, VictoriaMetrics, Elasticsearch and other sources, with alert rules and notification routing.
-
Server and website monitoring with many check types such as HTTP, DNS, SMTP, SSH and TCP ports, confirmed from multiple locations before alerting.
-
HTTP-based pub-sub push service: POST a message to a topic URL and it arrives on phones and desktops through the ntfy apps. Use the public server, a paid plan, or self-host.
-
Web-based network traffic monitor that analyses packets or flows to show top talkers, applications, hosts and alerts. Open source Community edition with paid Pro and Enterprise versions.
-
Log collection agent and platform strong on Windows event logs: collects, converts and forwards logs to SIEM and observability tools. A free Community Edition is also available.
-
Network performance monitoring that places agents at sites, in clouds and on user devices and runs synthetic traffic between them to measure latency, loss and jitter.
-
Observability platform, now part of Snowflake, that stores logs, metrics and traces on Snowflake and links them into a graph of related entities.
-
Network monitoring platform with SNMP auto-discovery of devices; a free Community Edition and a paid Professional edition with faster updates.
-
Oracle Cloud Infrastructure's metrics and alarms service for OCI resources and custom application metrics, queried with its Monitoring Query Language.
-
Uses eBPF to add OpenTelemetry tracing to applications on Kubernetes without code changes and sends the data to any backend.
-
Website monitoring that covers uptime, SSL certificates, broken links, mixed content, DNS, cron jobs and Lighthouse scores, with status pages.
-
On-call schedules with follow-the-sun rotations and substitutions, and escalation policies for alerts from Prometheus, Grafana, Datadog, CloudWatch, Sentry or any webhook. Notifies in Slack and in the web app.
-
Uptime monitoring for websites and APIs, browser checks, cron job heartbeats and status pages, run by a small independent team.
-
On-call alerting and scheduling service with a mobile paging app, escalations and live call routing, used by IT teams and by hospitals as a pager replacement.
-
Monitoring suite that manages Naemon checks through a web interface, with Checkmk and Grafana integration; community and enterprise editions.
-
Open source, OpenTelemetry-native AI observability: SDK auto-instruments LLMs, vector databases and GPUs, with a self-hosted UI for traces, costs, evals and prompts.
-
Open source OpenTelemetry instrumentations for LLM providers, vector databases and agent frameworks, by Traceloop; sends traces to any OTLP backend or the Traceloop platform.
-
Network management platform for fault and performance monitoring at scale; Horizon is the open source edition and Meridian the supported one.
-
Single-binary store for logs, metrics and traces on object storage, with SQL search, dashboards and alerts. Self-host the open source build or use the pay-as-you-go cloud.
-
Open source session replay with developer tools attached: console logs, network requests and performance data alongside each recording, plus co-browsing. Self-host free or use a managed instance.
-
Apache-licensed fork of Elasticsearch and Kibana run under the Linux Foundation. Indexes and searches logs, with OpenSearch Dashboards, alerting and trace analytics plugins.
-
Open source status pages and multi-region uptime monitoring, available as a hosted service or self-hosted.
-
CNCF project defining vendor-neutral APIs, SDKs, semantic conventions and the OTLP protocol for traces, metrics, logs and profiles, with auto-instrumentation for major languages.
-
Vendor-neutral agent and gateway that receives, processes and exports traces, metrics and logs to one or more backends.
-
Zero-code eBPF instrumentation that produces traces and RED metrics for HTTP, gRPC, database and messaging calls from Linux processes. Started as Grafana Beyla and was donated to OpenTelemetry.
-
Whole-system eBPF profiling agent donated to OpenTelemetry by Elastic. Profiles native, JVM, Python, Ruby, PHP, Node.js and Go code without instrumentation and exports via OTLP.
-
Open source LLM and agent observability from Comet: tracing, test suites, evaluations and a prompt optimizer; self-host the same code as the cloud.
-
Atlassian's alerting and on-call tool with schedules, escalations and alert routing. No longer sold; customers are being moved to Jira Service Management.
New sales stopped 2025-06-04; Opsgenie shuts down 2027-04-05 and its features move to Jira Service Management.
-
ITRS infrastructure monitoring for servers, networks, cloud and applications, with Nagios-compatible checks and a REST API.
-
Long-running on-call and incident platform: schedules, escalation policies, event routing and phone, SMS and push paging, with add-ons for automation and status pages.
-
Slack-based on-call tool that builds rotations and syncs them to Slack user groups, with optional paging by phone, SMS and app and escalation from L1 to L3.
-
On-call scheduling and alerting service with escalation layers, integrations for common monitoring tools, and push, SMS and voice notifications.
-
Monitoring for servers, networks, applications and logs, with an open source community edition and a commercial enterprise edition.
-
SolarWinds hosted syslog and app log aggregation with a live-tail web viewer, saved searches that trigger alerts, and archives to S3. Billed per GB.
-
Open source continuous profiler: an eBPF agent samples CPU stacks from every process on a host with no code changes, and the server stores profiles for querying as flame graphs over time.
-
Log and telemetry store written in Rust that keeps data as Parquet on object storage and queries it with SQL. Open source server, plus a hosted cloud and enterprise edition.
-
Self-hosted uptime monitor written in Go with a React UI, built as an alternative to Uptime Kuma, with status pages and pluggable notification channels.
-
Open source monitoring for MySQL, PostgreSQL, MongoDB and Valkey: a server and client agents collect metrics and query analytics, with Grafana-based dashboards and alerting.
-
Continuous profiler open sourced by Yandex for large fleets: deploys to Kubernetes, collects low-overhead eBPF profiles cluster-wide, and can feed profile-guided optimization builds.
-
CNCF open source dashboard tool with an open dashboard specification: Prometheus, Tempo and Loki panels, dashboards as code, and Kubernetes-native deployment.
-
Hosted Postgres performance monitoring that collects query statistics, plans and logs, and suggests indexes and VACUUM settings. The Enterprise plan can run on your own infrastructure.
-
PostgreSQL log analyzer that turns server logs into HTML reports on slow queries, errors, locks, checkpoints and connections.
-
PostgreSQL monitoring service from RapidLoop that tracks queries, replication, locks and table stats over time, with alerts. A self-hosted edition is sold on annual licences.
-
Small web dashboard for Postgres that shows slow queries, index usage, table bloat and connection counts. Runs as a Rails engine or a Docker container.
-
Crunchy Data's bundle of Prometheus exporter queries, alert rules and Grafana dashboards for monitoring PostgreSQL and its hosts.
-
PostgreSQL monitoring from Cybertec that gathers metrics with SQL queries and stores them in Postgres or Prometheus for the bundled Grafana dashboards.
-
Uptime monitoring with incident management and status pages, billed by the number of check requests rather than per monitor.
-
SolarWinds website monitoring: uptime and multi-step transaction checks from global probes, plus real user monitoring of page performance.
-
Uptime monitoring for HTTP, HTTPS, SSH and custom TCP ports, with SMS and voice alerts on paid plans.
-
Network troubleshooting tool that runs continuous traceroutes to chart latency and packet loss hop by hop. Desktop editions include a free version; the Cloud edition monitors remote users.
-
Hosted status pages with uptime checks and incident updates, and notifications to subscribers by email, Slack, SMS, Discord and other channels.
-
APM for large Java and PHP systems that traces transactions across services and draws a server map of their calls.
-
Kubernetes observability that uses eBPF to capture service traffic, metrics and CPU profiles automatically; a CNCF sandbox project.
-
NetFlow and IPFIX analysis platform for network traffic visibility, capacity planning and security investigations.
-
Set of passive network monitoring daemons that collect NetFlow, IPFIX, sFlow, BGP and BMP data and export traffic accounting to databases or message brokers.
-
Push notifications to an iOS or Android app from a REST API, a webhook with JSON mapping, or integrations such as Grafana, Datadog and Prometheus.
-
Hosted continuous profiling from the team behind Parca: send eBPF or pprof profiles and compare CPU and memory usage across deployments, priced by samples ingested.
-
AI gateway with an observability layer: one API for many model providers with routing, fallbacks and caching, and logs of each request with cost and latency. The gateway is open source.
-
EDB's tool for monitoring and managing fleets of PostgreSQL and EDB Postgres servers, with performance dashboards, alerting and tuning advice.
-
Prometheus exporter that exposes PostgreSQL server statistics as metrics for Prometheus to scrape and alert on.
-
Open source product suite with session replay, product analytics, feature flags, error tracking and LLM analytics sharing one event store. Hosted with a monthly free allowance, or self-hosted.
-
PostgreSQL Workload Analyzer: collects query statistics from pg_stat_statements and related extensions into a history you browse in a web UI, with index suggestions.
-
Flow-based network monitoring and network detection and response from Progress, covering traffic analysis, application performance and threat detection.
-
CNCF metrics system that scrapes time series from exporters and apps, stores them locally, and evaluates PromQL alert rules that it sends to Alertmanager.
-
Receives alerts from Prometheus and compatible systems, then groups, deduplicates, silences and routes them to email, Slack, PagerDuty, webhooks and other receivers.
-
Kubernetes operator that deploys and configures Prometheus and Alertmanager from custom resources. Its kube-prometheus project and the kube-prometheus-stack Helm chart bundle a full cluster monitoring setup.
-
Small proxy that receives Alertmanager webhooks and forwards them as formatted cards to Microsoft Teams channels.
-
Windows-based network and server monitoring from Paessler built around sensors for SNMP, WMI, flows, ping and HTTP, with maps and dashboards.
-
Website uptime and SSL monitoring with status pages, incident notes and pay-per-alert SMS and phone calls.
-
Self-hosted relay that delivers push notifications to you through Matrix, with an API similar to Gotify and Pushover.
-
Push notification service with iOS, Android and desktop apps and a simple API supported by many monitoring tools, including an emergency priority that repeats until acknowledged.
-
Enterprise digital analytics with session replay, friction and error detection, and performance data for web and mobile, used by large retail, travel and banking sites.
-
Rust search engine for logs and traces that indexes into object storage and searches there directly, with Elasticsearch-compatible and Jaeger APIs. The team joined Datadog in January 2025.
-
Crash reporting, real user monitoring and APM with usage-based pricing on errors, sessions and traces. Covers .NET, JavaScript and mobile platforms.
-
Database estate monitoring for SQL Server, PostgreSQL, Oracle and MySQL (formerly SQL Monitor), with query performance history, alerting and estate-wide health views.
-
Hosted agent-based service for MySQL, MariaDB and PostgreSQL that monitors performance, analyses slow queries and recommends configuration and index changes.
-
Real user monitoring focused on Core Web Vitals and page speed for websites, with lab tests, SEO tracking and email alerts when performance slips.
-
AI SRE product whose agents investigate alerts and incidents across code, infrastructure and telemetry and take on routine operational tasks for on-call engineers.
-
IT automation platform for infrastructure and service desk teams that builds workflows to diagnose and fix known incidents and requests, plus agents for knowledge lookup.
-
LLM gateway, logging and evaluation platform (formerly Keywords AI): routes calls to many models through one API and records traces, cost and scores.
-
Kubernetes alert enrichment and routing on top of Prometheus: adds pod logs, events and graphs to alerts and sends them to Slack, Teams and other sinks. Open source core plus a paid SaaS.
-
Error monitoring that groups exceptions into items, ties them to deploys and versions, and alerts through Slack, PagerDuty and others. Includes session replay.
-
Incident management run from Slack with automated workflows, roles, timelines, retrospectives and status pages, alongside Rootly's own on-call product.
-
Rootly's paging product: schedules, escalation policies, alert routing and a mobile app, connected to Rootly incident response in Slack.
-
Open source library that records DOM changes in the browser and replays them as a session video; the recording engine inside many session replay products.
-
Default syslog daemon on many Linux distributions; also a high-throughput log pipeline that parses, filters and forwards logs to Elasticsearch, Kafka, files or remote syslog.
-
Real user monitoring for Core Web Vitals: breaks down LCP, INP and CLS by page template, device and third-party script, with regression alerts and CrUX competitor comparisons.
-
Runbook automation server that wraps scripts and commands into access-controlled jobs that operators or alerts can trigger. The commercial edition is PagerDuty Runbook Automation.
-
Slack-first on-call and incident tool for small teams: schedules, alerting, incident lifecycle, postmortem drafts and hosted status pages.
-
Command runner for Healthchecks.io: wraps a job, sends start, success or failure pings with its output, and also works with self-hosted Healthchecks.
-
Turns Markdown runbooks into runnable notebooks in VS Code or the terminal, so operational steps can be executed and tested. A Linux Foundation project, started by Stateful.
-
Telemetry management platform that runs OpenTelemetry-based pipelines and recommends filters, sampling and PII masking to cut noisy, costly observability data.
-
Scaleway's observability service built on Grafana, Mimir, Loki and Tempo, collecting metrics and logs from Scaleway products by default and accepting external data.
-
APM for Ruby, Python, PHP and Elixir apps that points to slow endpoints, N+1 queries and memory bloat, with error and log monitoring included.
-
Web dashboard for hard drive S.M.A.R.T. data that tracks disk health over time and warns before a drive fails.
-
Hosted infrastructure monitoring, log management, synthetic checks and real user monitoring, with a plan chosen per app.
-
Monitoring event pipeline for dynamic infrastructure: agents run checks, and filters and handlers route the results to alerting and metrics tools, all managed as code.
-
Captures exceptions and crashes from web, mobile and backend SDKs, groups them into issues with stack traces and releases, and alerts owners. Adds tracing, replays and logs.
-
Self-hosted server for structured logs and traces, popular in .NET shops via Serilog. Search with a SQL-like syntax, build dashboards and send alerts.
-
Uptime monitoring with HTTP, browser, DNS and domain checks and status pages, built for larger projects with many teams.
-
Go library and CLI for sending notifications to services such as Slack, Discord, Telegram, email and Pushover through a single URL format.
-
Mobile alerting app that delivers alerts to the team on duty by push, SMS and voice call, with acknowledgements, duty scheduling and many monitoring integrations.
-
Open source, OpenTelemetry-native APM with traces, metrics and logs stored in ClickHouse, self-hosted or as SigNoz Cloud.
-
Hosted server monitoring that collects metrics and logs through one agent, with dashboards and alerts and little setup.
-
Zoho's monitoring suite for websites, servers, networks, applications and cloud, with synthetic transactions and RUM; plain uptime checks have a free plan.
-
Heartbeat and scheduled-task monitoring alongside website uptime, SSL, DNS and domain checks, priced per monitor.
-
Performance profiler for Ruby on Rails apps that aggregates request traces into per-endpoint breakdowns; free for open source apps.
-
Session recording, heatmaps and funnels for web and mobile apps, owned by Cisco. Being wound down, with its features moving into Splunk Observability Cloud.
End of sale 2026-05-31; no renewals after 2026-08-31; platform decommissioned 2027-09-30 (Smartlook site).
-
Ruby (Sinatra) framework for team wallboard dashboards built from widgets that pull data from scripts and APIs; community fork of Shopify's Dashing.
No commits to the main repository since 2023-03-10 (GitHub). Source code
-
Latency monitor that probes hosts continuously and graphs latency and packet loss distribution over time.
-
Suite of network, server, database and application monitoring products, sold as self-hosted software and as the SaaS SolarWinds Observability.
-
Wait-time based performance analysis for SQL Server, Oracle, MySQL, PostgreSQL and other engines, showing which queries and waits slow each database down.
-
Hosted status pages for public and private audiences with incident and maintenance notices, product update posts and subscriber notifications.
-
Web performance monitoring that pairs real user monitoring with scheduled synthetic tests, tracking Core Web Vitals and page speed against budgets and competitors.
-
On-call and incident alerting for small teams, with phone, SMS, WhatsApp and Telegram alerts, Slack and Discord actions, and a status page.
-
Log indexing and search platform (Splunk Enterprise, self-hosted, or Splunk Cloud) with the SPL query language, dashboards and alerting. Widely used for security and IT operations.
-
Enterprise APM that maps business transactions across services and ties application performance to business metrics; now part of Splunk and Cisco.
-
Splunk's SaaS for infrastructure monitoring, APM, RUM and synthetics, built on OpenTelemetry with streaming metrics.
-
Formerly VictorOps: on-call schedules, escalation policies, alert routing rules and a shared incident timeline, now part of Splunk.
-
IDERA's SQL Server performance monitoring: tracks queries, waits and server health, sends alerts and suggests fixes. A MySQL version is also sold.
-
SolarWinds tool for SQL Server performance monitoring: tracks waits, blocking, deadlocks and top queries, and alerts on problems across instances.
-
On-call, alert routing and incident response platform with schedules, escalations and postmortems. Acquired by SolarWinds in March 2025 and sold as SolarWinds Incident Response.
-
APM for .NET, Java, PHP, Node.js, Python and Ruby apps that combines code-level traces with centralized logs and errors.
BMC Helix announced end of life; the SaaS is inaccessible after 2027-03-31 and gets no new features until then.
-
Event-driven automation engine that runs rules, workflows and ChatOps actions in response to alerts and events, often used for automatic remediation.
-
Self-hosted status page and monitoring server in Go that checks HTTP, TCP and other services and shows their state and history; a maintained fork of Statping.
-
Network performance monitoring that polls interfaces and devices over SNMP at short intervals and keeps full-resolution history for capacity planning and forensics.
-
Hosted status pages with incident and maintenance communication, component containers, metrics charts and email, SMS, webhook and social media notifications.
-
Website monitoring with uptime, page speed, domain and SSL checks from test locations around the world.
-
Status page aggregator that monitors the status pages of cloud and SaaS vendors, sends alerts on their outages and lets you build your own status page from them.
-
Hosted status pages with incident and maintenance management, subscriber notifications, embeddable widgets and audience targeting.
-
Hosted status pages with incident management and monitoring, offered as a newer product line and an enterprise-focused Classic edition.
-
Cloud log analytics and SIEM with a query language, dashboards, scheduled searches and security detections. Flex pricing based on data volume; trial only.
-
Open source OpenTelemetry observability for traces, logs and metrics, with AI agents that investigate incidents; self-hostable or hosted.
-
Uptime, domain, SSL and server monitoring from DiCloud, with status pages and downtime alerts.
-
Commercial Kubernetes and cloud monitoring built on a managed Prometheus service, with dashboards, alerting and cost views for clusters and workloads.
-
Long-running open source log collector and forwarder: receives syslog, files and journald, parses and filters messages, and sends them to files, databases, Kafka or SIEMs. Commercial editions exist.
-
Incident and on-call management with schedules, escalation policies, a mobile app, web app and API, and status pages.
-
Self-hosted error tracker that runs as one container and accepts reports from existing Sentry SDKs by changing the DSN. Sold as a licence, not a subscription.
-
InfluxData's plugin-based agent that collects metrics and events from systems, services and APIs and writes them to InfluxDB, Prometheus and many other outputs.
-
Observability for AI and LLM apps on OpenTelemetry: traces model and tool calls with tokens, cost, latency and errors; send OTLP over HTTP or use the TypeScript SDKs.
-
Open source pipeline engine for security and log data: nodes collect, parse, normalise and route events with a pipeline language, managed from a hosted or self-run platform.
-
Adds a global query view, high availability and long-term object-storage retention to existing Prometheus servers; a CNCF project.
-
Cisco's network and internet visibility service: synthetic tests from cloud and enterprise agents trace the network path to your apps and SaaS providers.
-
Shell script that runs simple HTTP, ping and port checks and writes the results to a static HTML status page.
-
JavaScript error monitoring that records a telemetry timeline of user actions, network calls and console output leading up to each browser error.
-
AI SRE for large, complex systems that investigates incidents by reasoning over logs, metrics, traces and code changes, and can run checks before anyone is paged.
-
Pay-as-you-go website monitoring with HTTP, SSL and Apdex tracking, public status pages, and alerts by email, SMS and webhooks.
-
Uptime monitor and status page that runs entirely on GitHub: Actions do the checks, Issues record incidents and GitHub Pages serves the status site.
-
Self-hosted monitor for HTTP, keyword, TCP, ping, DNS, Docker and push checks, with status pages and dozens of notification integrations.
-
Incident response training: simulated production incidents that engineers work through as drills, with individual and team performance reports.
-
Uptime and transaction monitoring with API and page speed checks, real user monitoring, status pages and SLA reporting.
-
Serverless uptime monitor and status page that runs on Cloudflare Workers, checking HTTP and TCP endpoints and sending notifications.
-
Uptime, SSL and domain monitoring with a customizable status page and email and Telegram alerts, free plan allowed for commercial use.
-
Uptime monitoring for websites, APIs, ports, ping, keywords, SSL, DNS and cron heartbeats, with status pages and team alerting.
-
OpenTelemetry APM that stores traces, metrics and logs in ClickHouse, available self-hosted or as a cloud service priced per GB.
-
Website, API and multi-step transaction monitoring from a global checkpoint network, plus real user monitoring.
-
Rust observability pipeline from Datadog that collects, transforms and routes logs and metrics between sources and sinks, run as agent or aggregator.
-
Self-hosted alert relay that turns webhooks from Alertmanager, Grafana, Sentry and others into templated messages for Slack, Teams, Telegram and email, escalating to on-call tools if unacknowledged.
-
Log database from the VictoriaMetrics team, run as a single binary or cluster, queried with LogsQL and viewable in Grafana. Accepts Loki, Elasticsearch and OTLP ingestion.
-
Prometheus-compatible time-series database and monitoring stack in single-node and cluster versions, with enterprise and managed cloud editions.
-
Self-hosted status page for microservices, written in Rust, that probes HTTP, TCP and ICMP targets and sends alerts to Slack, email, SMS and other channels.
-
Weights & Biases toolkit for tracing LLM calls, running evaluations with custom scorers and comparing model and prompt versions.
-
Cron job monitoring with heartbeat pings and alerts, plus hosted cron jobs that call your URLs on a schedule.
-
Heartbeat monitoring and status pages for cron jobs, backups and background workers, with an MCP server and free plans for open source projects.
-
Progress network monitoring for devices, servers and applications, with layer 2/3 discovery and interactive network maps.
-
Uptime monitoring plus agent-based Linux and Windows server monitoring, with status pages and SMS or phone call alerts.
-
Everbridge's on-call and alerting product: scheduling, escalations, multi-channel notifications and a low-code flow designer for automating response steps.
-
Hosted status pages for incident communication, formerly sold as StatusCast; part of Xurrent's incident management and response product since Xurrent bought StatusCast in 2024.
-
Long-standing system and network monitor that shows host and service status on a color-coded web page, with client agents for host data.
-
Open source monitoring for networks, servers, VMs, applications and cloud, using agents, SNMP and templates with trigger-based alerting; Zabbix Cloud is the hosted option.
-
On-call and incident response tool with schedules, escalations, alert rules, playbooks and postmortems. Owned by Xurrent since 2025 and being renamed Xurrent IMR.
-
Distributed tracing system that collects timing data from instrumented services and shows where latency builds up across them.
-
Self-hosted, cluster-wide profiler for AI training and inference fleets: continuous whole-system CPU profiling plus GPU and accelerator profiling for CUDA, ROCm and other chips.
No tools match every filter. to see the full list.