Infrastructure & ops · Updated October 2026
Datadog is a hosted monitoring service for metrics, logs, and traces. If you would rather own your tools, here are 6 open source alternatives to Datadog, ranked by GitHub stars. Each one is free to use under its license, and you can read, change, and often self-host the code.
The most popular is Netdata with 81.1k stars, and the most recently updated is Grafana, with a commit on Oct 21, 2026.
by netdata
The fastest path to AI-powered full stack observability, even for lean teams.
by grafana
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
by SigNoz
SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log m…
by openobserve
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 alternativ…
by hyperdxio
Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.
by coroot
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 a…
By GitHub stars, Netdata is the most popular open source alternative to Datadog right now, with 81.1k stars, followed by Grafana and SigNoz. The best fit depends on your setup, so compare their licenses, languages, and recent activity in the table above.
Yes. All 6 projects on this page are open source, so the software itself is free to use, study, and change. Some of them also sell a hosted version or paid support.
Grafana (last commit Oct 21, 2026), OpenObserve (last commit Oct 21, 2026), and HyperDX (last commit Oct 21, 2026) have the most recent commits. Licenses on this list include GPL-3.0, AGPL-3.0, MIT, and Apache-2.0.
Netdata
Grafana
SigNoz
OpenObserve
HyperDX
Coroot