Open Source Performance Monitoring (APM) Tools using Testing Library
A curated collection of the best open source application Performance Monitoring tools for tracking application behavior. using Testing Library.
Unified observability for metrics, logs, traces, and more
Stars
76,514Last commit
7 hours agoLicense
AGPL-3.0
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.
Open Source Alternative to:
Real-time error tracking and performance monitoring
Stars
44,658Last commit
8 hours agoLicense
Unknown
Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.
Open Source Alternative to:
Open-source observability platform for cloud-native apps
Stars
31,973Last commit
17 hours agoLicense
MIT
Comprehensive monitoring and troubleshooting solution for microservices architectures, offering metrics, traces, and logs in a single pane.
Open Source Alternative to:
Full-stack observability without the enterprise price tag
Stars
9,870Last commit
1 day agoLicense
MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,373Last commit
10 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Comprehensive monitoring and incident management platform
Stars
7,536Last commit
9 hours agoLicense
Apache-2.0
All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly
Open Source Alternative to:
OpenTelemetry observability with traces, logs, and metrics
Stars
1,736Last commit
5 hours agoLicense
Unknown
Observability platform built on OpenTelemetry and ClickHouse. Collect, visualize, and query distributed traces, logs, and metrics, with an MCP server for AI agent diagnostics.
Open Source Alternative to:
Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
Stellar Hosted