Freemium
Sentry
Open SourceError Tracking · Monitoring & Observability
Error monitoring and tracing for every stack, with clear stack traces.
errorsmonitoringtracingapm
Discover the 11 best open-source tools for monitoring & observability. Community-driven, transparent source code with permissive licenses. Curated, compared, and updated for developers.
| Tool | Pricing | Platforms | Top Strength | Link |
|---|---|---|---|---|
| Sentry | freemium | web | Error tracking with stack traces, release tagging and blame-worthy context | Details → |
| Grafana | freemium | web | Visualization standard for metrics, logs and traces in one place | Details → |
| Prometheus | free | web | The metrics standard for cloud-native — pull model + PromQL is powerful | Details → |
| Loki | freemium | web | Horizontally-scalable log aggregation designed like Prometheus. | Details → |
| ELK Stack | freemium | web | Elasticsearch, Logstash and Kibana for log ingestion and search. | Details → |
| OpenTelemetry | free | web | Vendor-neutral standard for traces, metrics and logs instrumentation. | Details → |
| Jaeger | free | web | Open-source distributed tracing platform, CNCF graduated. | Details → |
| Uptime Kuma | free | web | Fancy open-source self-hosted uptime monitoring with status pages. | Details → |
| SigNoz | freemium | web | Open-source Datadog alternative built on OpenTelemetry. | Details → |
| Plausible | freemium | web | Lightweight, privacy-friendly open-source web analytics. | Details → |
Showing top 10 of 11. Browse the full grid below.
Error Tracking · Monitoring & Observability
Error monitoring and tracing for every stack, with clear stack traces.
Logs & Metrics · Monitoring & Observability
Open-source visualization and analytics for metrics, logs and traces.
Logs & Metrics · Monitoring & Observability
The standard open-source metrics collection and alerting toolkit.
Logs & Metrics · Monitoring & Observability
Horizontally-scalable log aggregation designed like Prometheus.
Logs & Metrics · Monitoring & Observability
Elasticsearch, Logstash and Kibana for log ingestion and search.
APM & Tracing · Monitoring & Observability
Vendor-neutral standard for traces, metrics and logs instrumentation.
APM & Tracing · Monitoring & Observability
Open-source distributed tracing platform, CNCF graduated.
Uptime & Alerting · Monitoring & Observability
Fancy open-source self-hosted uptime monitoring with status pages.
APM & Tracing · Monitoring & Observability
Open-source Datadog alternative built on OpenTelemetry.
Web Analytics · Monitoring & Observability
Lightweight, privacy-friendly open-source web analytics.
Web Analytics · Monitoring & Observability
Simple, self-hostable web analytics you own (trending).