Best tracing and APM tools in 2026
Distributed tracing and application performance monitoring: follow a request across services and find where the time goes. This list has the top 10 of 22 tracing and APM tools, ranked by a published score. Of these, 2 are open source, 7 have a free plan and 5 can be self-hosted. Checked by hand on 30 September 2026.
How this list is ranked
Each active tool gets a score out of 100. Archived, end-of-sale and maintenance-only tools are left out.
- Capabilities: up to 75 points for the share of the category checklist that the tool's own documentation confirms. A tool meeting 8 of 10 items gets 60.
- Free to start: 15 points for a free plan or a free edition.
- Open or self-hostable: 10 points if it is open source or can be self-hosted.
Each category has a fixed checklist of capabilities (shown in the table below and on every tool page). An item counts only when the tool's own documentation confirms it; anything we could not confirm counts as not met. How long a tool has existed is deliberately not scored, so a new tool is not ranked below an older one for being new. Tools with the same score share a rank (shown as =), are listed A to Z within it, and the list never cuts between them. Nobody pays for a position.
- 1
Sentry
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.
93 9 of 10 capabilities (68), free 15, open 10 - =2
Apache SkyWalking
APM for distributed systems from the Apache Software Foundation: agents and service mesh probes collect traces, metrics and logs and draw service topology maps.
85 8 of 10 capabilities (60), free 15, open 10 - =2
Pinpoint
APM for large Java and PHP systems that traces transactions across services and draws a server map of their calls.
85 8 of 10 capabilities (60), free 15, open 10 - 4
IBM Instana
Enterprise APM and observability that discovers services automatically and traces every request across them.
78 9 of 10 capabilities (68), free 0, open 10 - =5
AppSignal
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.
75 8 of 10 capabilities (60), free 15, open 0 - =5
Atatus
Full-stack observability SaaS with APM, real user monitoring, logs, infrastructure and synthetic monitoring, priced without per-user fees.
75 10 of 10 capabilities (75), free 0, open 0 - =5
Site24x7
Zoho's monitoring suite for websites, servers, networks, applications and cloud, with synthetic transactions and RUM; plain uptime checks have a free plan.
75 8 of 10 capabilities (60), free 15, open 0 - 8
Splunk AppDynamics
Enterprise APM that maps business transactions across services and ties application performance to business metrics; now part of Splunk and Cisco.
70 8 of 10 capabilities (60), free 0, open 10 - =9
Honeycomb
Observability built for high-cardinality event data: query traces and events by any field to work out why production behaves the way it does.
68 7 of 10 capabilities (53), free 15, open 0 - =9
Lumigo
Troubleshooting for serverless and container apps with automatic distributed tracing that captures request and response payloads across AWS Lambda and other services.
68 7 of 10 capabilities (53), free 15, open 0
Side by side
| Tool | Pricing | Free plan | Open source | Self-hosted | Distributed tracing | OTLP traces ingest | Service map | Auto-instrumentation | Database query analysis | Error capture | Latency and error alerts | Trace to log correlation | Sampling controls | Code-level detail |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sentry | Free plan | Developer: 5K errors/month, 1 user | No | Yes | Yes | Yes | - | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Apache SkyWalking | Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | Yes | - | Yes | Yes |
| Pinpoint | Free | Yes | Yes | Yes | Yes | - | Yes | Yes | Yes | Yes | Yes | Yes | - | Yes |
| IBM Instana | Paid | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes |
| AppSignal | Free plan | 30K requests, 1 GB logs, 5-day retention | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | - |
| Atatus | Paid | No | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Site24x7 | Free plan | Uptime checks for 50 resources, email alerts | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | - | - | Yes |
| Splunk AppDynamics | Paid | No | No | Yes | Yes | Yes | Yes | Yes | Yes | - | Yes | Yes | - | Yes |
| Honeycomb | Free plan | 20M events/mo | No | No | Yes | Yes | Yes | Yes | - | - | Yes | Yes | Yes | - |
| Lumigo | Free plan | 150k traces, 5 GB logs/mo | 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.
More lists
- Tracing and APM tools in 2026 22
- Open source tracing and APM tools in 2026 8
- Tracing and APM tools with a free plan in 2026 17
- Self-hosted tracing and APM tools in 2026 11
- Best observability tools in 2026 47
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