the open source movement

Replace Datadog.

22 open source alternatives, ranked by health. We re-check every project weekly, so you don’t migrate to something abandoned.

Ranked by health

  1. NetdataReal-time infrastructure monitoring agent with per-second metrics, auto-detected collectors and alerts.★ 81k GPL-3.0 agent + proprietary dashboard Go self-host managed
  2. GrafanaThe 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.★ 77k AGPL-3.0 TypeScript self-host managed
  3. PrometheusThe Prometheus monitoring system and time series database.★ 66k Apache-2.0 Go self-host
  4. SigNozOpenTelemetry-native observability platform with logs, metrics, traces, APM and alerting in one tool.★ 32k MIT + commercial ee/ TypeScript self-host managed
  5. BeszelLightweight server monitoring with historical data, docker stats, and alerts.★ 26k MIT Go self-host
  6. Apache SkyWalkingApplication performance monitoring system for distributed systems, with tracing, metrics and logging.★ 25k Apache-2.0 Java self-host
  7. JaegerCNCF Jaeger, a Distributed Tracing Platform★ 23k Apache-2.0 Go self-host
  8. OpenObserveObservability platform for logs, metrics, traces, real user monitoring and session replay.★ 22k AGPL-3.0 TypeScript self-host managed
  9. KibanaWeb interface for searching, visualizing and analyzing data stored in Elasticsearch.★ 21k AGPL-3.0 / SSPL-1.0 / Elastic-2.0 TypeScript self-host managed
  10. VictoriaMetricsTime-series database with metric collection and alerting; pairs with Grafana for dashboards.★ 18k Apache-2.0 Go self-host managed
  11. ZipkinZipkin is a distributed tracing system★ 17k Apache-2.0 Java self-host
  12. PinpointApplication performance management tool for large-scale distributed systems, with distributed tracing.★ 14k Apache-2.0 Java self-host
  13. NightingaleMonitoring and alerting platform that works with Prometheus and other time-series data sources.★ 13k Apache-2.0 Go self-host
  14. Grafana PyroscopeContinuous Profiling Platform. Debug performance issues down to a single line of code★ 12k AGPL-3.0 Go self-host managed
  15. NezhaSelf-hosted, lightweight server and website monitoring and operations tool.★ 10k Apache-2.0 Go self-host
  16. HyperDXObservability platform unifying session replays, logs, metrics, traces and errors, built on ClickHouse and OpenTelemetry.★ 9.9k MIT TypeScript self-host managed
  17. CorootObservability and APM tool combining metrics, logs, traces, profiling and SLO-based alerting.★ 7.9k Apache-2.0 Go self-host
  18. OneUptimeComplete open-source monitoring and observability platform.★ 7.7k Apache-2.0 + commercial ee/ TypeScript self-host managed
  19. Apache HertzBeatAgentless real-time monitoring and alerting system for servers, databases, applications and networks.★ 7.4k Apache-2.0 Java self-host
  20. PulseReal-time monitoring dashboard for Proxmox VE, PBS, Docker, Kubernetes, TrueNAS and vSphere. Self-hosted, with smart alerts and AI patrols that catch silent failures.★ 6.8k MIT Go self-host
  21. UptraceOpenTelemetry-based APM that stores traces, metrics and logs in ClickHouse with dashboards and alerts.★ 4.3k AGPL-3.0 Go self-host managed
  22. ParseableObservability platform storing logs, metrics and traces in object storage, with search, dashboards and alerts.★ 2.5k AGPL-3.0 Rust self-host managed
How the ranking works

Health blends commit recency, release cadence, issue throughput, contributor breadth and star growth. Stars are shown but never ranked on. The full method.