Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
Top APM GitHub Repositories & Tools (2026)
Discover the most starred and trending open source tools tagged with #apm.
JavaMelody : monitoring of JavaEE applications
Measure helps mobile teams monitor and fix crashes, ANRs, bugs, and performance issues. The open source alternative to Firebase Crashlytics.
New Relic RPM Ruby Agent
Datadog APM client for Java
๐ฅ AppSignal for Ruby gem
Self-hosted Laravel monitoring agent. Drop-in Nightwatch alternative, open-source.
Kieker is an observability framework, that consists of an monitoring and tracing agent, and compatible analysis tools
Ultra-lightweight error tracking server compatible with Sentry SDKs
Parseable is an open source, unified infrastructure observability platform built in Rust on a data lake architecture. It tracks logs, metrics, traces, and events across apps, agents, and systems, reducing storage costs by up to 90% through columnar telemetry compression.
Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.