Cloud monitoring tools with a free plan in 2026
The monitoring built into AWS, Azure, Google Cloud and other providers, and managed Prometheus services. This list has 9 cloud monitoring tools. Of these, 0 are open source, 9 have a free plan and 0 can be self-hosted. Checked by hand on 30 September 2026.
- 1
Alibaba Cloud CloudMonitor
Alibaba Cloud's monitoring service for its cloud resources and hybrid environments, with metrics, event alerts and support for Prometheus, Grafana and OpenTelemetry data.
- 2
Amazon CloudWatch
AWS's native monitoring service: collects metrics and logs from AWS services and your apps, with alarms, dashboards, synthetic canaries and application signals.
- 3
Amazon Managed Service for Prometheus
Serverless, Prometheus-compatible metrics store on AWS: remote-write metrics from EKS or other clusters and query them with PromQL.
- 4
Azure Monitor
Microsoft Azure's monitoring service for metrics, logs and traces from Azure resources and apps, including Application Insights, Log Analytics, alerts and managed Prometheus.
- 5
DigitalOcean Monitoring
Built-in metrics and alert policies for DigitalOcean Droplets and other resources, collected by a small agent, at no extra charge.
- 6
Google Cloud Observability
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.
- 7
Longview
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.
- 8
OCI Monitoring
Oracle Cloud Infrastructure's metrics and alarms service for OCI resources and custom application metrics, queried with its Monitoring Query Language.
- 9
Scaleway Cockpit
Scaleway's observability service built on Grafana, Mimir, Loki and Tempo, collecting metrics and logs from Scaleway products by default and accepting external data.
Side by side
| Tool | Pricing | Free plan | Open source | Self-hosted | Provider service metrics | Logs | Traces | Alarms | Dashboards | Managed Prometheus or PromQL | Synthetic checks | Anomaly detection | Multi-account views | OpenTelemetry ingest |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alibaba Cloud CloudMonitor | Free plan | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | - | Yes |
| Amazon CloudWatch | Free plan | 10 custom metrics, 10 alarms, 5 GB logs per month | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Amazon Managed Service for Prometheus | Free plan | 40M samples ingested, 10 GB stored (AWS Free Tier) | No | No | - | No | No | Yes | - | Yes | No | - | - | Yes |
| Azure Monitor | Free plan | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| DigitalOcean Monitoring | Free | Yes | No | No | Yes | - | - | Yes | - | - | Yes | - | - | - |
| Google Cloud Observability | Free plan | 150 MiB metrics per billing account, 50 GiB logs/project | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | Yes | Yes |
| Longview | Free plan | Up to 10 clients, 5-min data, 12h history | No | No | No | No | No | - | - | No | No | - | - | No |
| OCI Monitoring | Free plan | Yes | No | No | Yes | - | - | Yes | Yes | - | - | - | - | - |
| Scaleway Cockpit | Free plan | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes | - | - | - | Yes |
Yes: confirmed in the tool's documentation. No: documented as not offered. -: not confirmed. Plans and prices change; check each tool's own site before you decide.
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