Open source application-monitoring projects
Every project in the registry tagged application-monitoring, ranked by real GitHub adoption.
Open-source observability platform for cloud-native apps
Full-stack observability without the enterprise price tag
Enterprise monitoring for networks, apps, and infrastructure
Open source observability platform for modern applications
Security framework that protects from within your product
Related tags
Frequently asked questions
How many open source application-monitoring projects are there?
This registry tracks 5 projects tagged application-monitoring, with 54,194 GitHub stars between them. The most-adopted is SigNoz at 32,116 stars.
Are these application-monitoring projects free to use?
Yes — 4 of the 5 carry an explicit open-source licence across 2 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 application-monitoring 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 application-monitoring projects still maintained?
5 of the 5 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.