Open source open-telemetry projects
Every project in the registry tagged open-telemetry, ranked by real GitHub adoption.
Distributed tracing, metrics, logs, and GenAI monitoring in one
OpenTelemetry Collector
Main repository for Datadog Agent
The only tool you need to know what is happening and how to fix it.
Langtrace 🔍 is an open-source, Open Telemetry based end-to-end observability tool for LLM applications, providing real-time tracing, evaluations and metrics f
The OpenTelemetry PHP Library
Related tags
Frequently asked questions
How many open source open-telemetry projects are there?
This registry tracks 6 projects tagged open-telemetry, with 40,389 GitHub stars between them. The most-adopted is Apache SkyWalking at 24,984 stars.
Are these open-telemetry projects free to use?
Yes — 6 of the 6 carry an explicit open-source licence across 3 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 open-telemetry 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 open-telemetry projects still maintained?
5 of the 6 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.