Open source observability projects
Every project in the registry tagged observability, ranked by real GitHub adoption.
Open source LLM engineering platform for AI-powered applications
Open-source observability platform for cloud-native apps
Distributed tracing, metrics, logs, and GenAI monitoring in one
Python-native workflow orchestration for data and ML teams
CNCF Jaeger, a Distributed Tracing Platform
High-performance time series database for metrics and logs
Zipkin is a distributed tracing system
Build production-ready applications in TypeScript
Apache Doris is a real-time analytics and hybrid search database for AI agents.
Capture SSL/TLS plaintext with eBPF—no MITM proxy or custom CA installation. Supports Linux and Android on x86_64 and arm64.
Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.
Build your own AI SRE agents. The open source toolkit for the AI era.
Continuous Profiling Platform. Debug performance issues down to a single line of code
Free, local tool to track AI coding token usage and cost across 37 tools and agents (Claude Code, Cursor, Codex, Gemini and more), by model, project, and task.
Real-time observability for modern web applications
Status page and uptime monitoring for growing teams
Full-stack observability without code changes
Comprehensive monitoring and incident management platform
OpenTelemetry Collector
Unified observability database for metrics, logs, and traces
Add-on agent to generate and expose cluster-level metrics.
Production-safe dynamic tracing and diagnostics for Java applications—attach to live JVMs with no restart or recompilation.
See what Claude Code and Codex actually send to the API — and what each part costs.
Open Source Cloud Native Application Protection Platform (CNAPP)
Deploy a professional status page in minutes, no coding required
Continuous profiling for analysis of CPU and memory usage, down to the line number and throughout time. Saving infrastructure cost, improving performance, and i
Simulation-based testing and evaluation for AI agents
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
Aya is an eBPF library for the Rust programming language, built with a focus on developer experience and operability.
Powerful observability made simple for developers
Hubble - Network, Service & Security Observability for Kubernetes using eBPF
Open source observability platform for modern applications
A self-hosted CPA / CLIProxyAPI management panel and AI gateway observability dashboard for requests, usage, cost, quota, failures, and account health.
Main repository for Datadog Agent
Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF
OpenTelemetry Collector distribution with programmable pipelines
Kiali project, observability for the Istio service mesh
🚀 Realtime Monitoring solution for Node.js/Express.js apps, inspired by status.github.com, sponsored by https://dynobase.dev
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
eBPF distributed networking observability tool for Kubernetes
Network inspector for your backend
Parseable is an open source, unified infrastructure observability platform built in Rust on a data lake architecture. It tracks logs, metrics, traces, and event
🦥 Easy and simple Prometheus SLO (service level objectives) generator
The CNCF sandbox for observability visualisation. Already supports Prometheus, Tempo, Loki and Pyroscope - more data sources to come!
Fast and easy to use database for logs, which can efficiently handle terabytes of logs
Portable project memory across Claude Code, Codex and OpenCode, plus token accounting measured from harness transcripts. Local file I/O, no API calls, no teleme
Real-time stream processing made simple and affordable
Fast and Lightweight Observability Data Collector
eBPF-based autoinstrumentation of web applications and network metrics
A log viewer for Kubernetes troubleshooting
An extensible Java library for HTTP request and response logging
🐳 Elastic Stack (ELK) v9+ on Docker with Compose. Pre-configured out of the box to enable Logging, Metrics, APM, Alerting, ML, and SIEM features. Up with a Si
Monoscope lets you ingest and explore your logs, traces and metrics. We store these in S3 compatible buckets. Query in natural language via LLMs.
Digging through logs is not observability. It's hope — wide events, structured errors, TypeScript-first, every runtime.
0x.Tools: X-Ray vision for Linux systems
Real-time logging dashboard for Kubernetes. View logs in a terminal or a browser. Run anywhere - desktop, cluster, docker.
OpenChoreo is an internal developer platform for Kubernetes
Intelligence for Kubernetes. World's most promising Kubernetes Visualization Tool for Developer and Platform Engineering teams.
All-in-one observability with unlimited data ingestion
Open-source observability tool that uses AI agents to self-heal your software
Related tags
Frequently asked questions
How many open source observability projects are there?
This registry tracks 81 projects tagged observability, with 478,887 GitHub stars between them. The most-adopted is Langfuse at 36,898 stars.
Are these observability projects free to use?
Yes — 77 of the 81 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which observability project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these observability projects still maintained?
72 of the 81 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.