the open source movement

Replace Splunk.

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

Ranked by health

  1. SigNozOpenTelemetry-native observability platform with logs, metrics, traces, APM and alerting in one tool.★ 32k MIT + commercial ee/ TypeScript self-host managed
  2. OpenObserveObservability platform for logs, metrics, traces, real user monitoring and session replay.★ 22k AGPL-3.0 TypeScript self-host managed
  3. 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
  4. WazuhSecurity platform that collects endpoint and cloud logs for threat detection, compliance and incident response.★ 17k GPL-2.0 C++ self-host managed
  5. HyperDXObservability platform unifying session replays, logs, metrics, traces and errors, built on ClickHouse and OpenTelemetry.★ 9.9k MIT TypeScript self-host managed
  6. GraylogCentralized log management server for collecting, searching, alerting on and analysing logs.★ 8.2k SSPL-1.0 Java self-host managed
  7. 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.