Sentry is the standard for error tracking, but usage-based SaaS pricing and heavyweight self-hosting requirements (officially 4 CPU cores and 16 GB RAM + 16 GB swap minimum) push many teams toward lighter alternatives. devpick lists the Sentry-SDK-compatible, lightweight Bugsink and the APM-capable SigNoz. GlitchTip (hosted on GitLab), also SDK-compatible, is another established option.
- Sentry-SDK compatible receiver — Bugsink accepts errors from Sentry client SDKs with no re-instrumentation
- Lightweight self-hosting — Bugsink starts as a single Docker container
- Unified observability — SigNoz combines logs, metrics, and traces (OpenTelemetry-native), beyond just errors
- The GlitchTip option — an open-source, Sentry-SDK-compatible tracker; its official site describes it as compatible with Sentry SDKs but easier to run
2 tools
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 management, infra monitoring, etc. Combined with SigNoz MCP and a native AI teammate (in SigNoz Cloud) it helps you build more resilient apps.
bugsink
Self-hosted Error Tracking
How to Choose an Alternative
Why look for an alternative — self-hosted Sentry is heavy
Sentry itself can be self-hosted, but the official minimum is 4 CPU cores, 16 GB RAM + 16 GB swap, and 20 GB disk (32 GB RAM recommended). For small teams, that operational weight is the main reason to look elsewhere.
Prioritize SDK compatibility
Migration cost hinges on whether you must re-instrument. Both Bugsink and GlitchTip advertise Sentry SDK compatibility, so applications only need to change the DSN (destination).
Errors only, or full monitoring?
If you only need error tracking, lightweight Bugsink or GlitchTip is enough. If you want APM, logs, and metrics in one place, OpenTelemetry-native SigNoz covers that scope.
Consider OSS beyond GitHub
GlitchTip is hosted on GitLab, so it has no card in this directory, but it is one of the most widely cited Sentry alternatives. It can be deployed from the official documentation.
Sentry vs Open-Source Alternatives
- Mature error management: grouping, release tracking, and more
- The SaaS edition requires zero operations
- Starts as a single Docker container (self-hosted Sentry officially needs 16 GB RAM minimum)
- Sentry-SDK compatible, so existing instrumentation carries over
- Designed from the ground up for self-hosting
- Depth of issue management and alerting as a dedicated error tracker
- Broad SDK and integration ecosystem
- Unifies logs, metrics, and traces in one place
- OpenTelemetry-native, reducing vendor lock-in
How to Choose
Keep your Sentry instrumentation and switch light with Bugsink or GlitchTip; expand from error tracking into unified monitoring with SigNoz.
FAQ
- Is there an open-source alternative to Sentry?
- Yes. Sentry-SDK-compatible Bugsink and GlitchTip are the established lightweight alternatives — you keep your instrumentation and just switch the DSN. For APM and logs on top of errors, SigNoz is the candidate.
- What is GlitchTip?
- An open-source error tracking tool compatible with Sentry client SDKs; its official site describes it as compatible with Sentry SDKs but easier to run. The project is hosted on GitLab and is widely used as a lightweight self-hosted alternative.
- Can I self-host Sentry for free?
- Yes, but the official minimum requirements are 4 CPU cores and 16 GB RAM + 16 GB swap, with 32 GB recommended — impractical on a small VPS. Teams that want light operations choose Bugsink or GlitchTip instead.
- How do Bugsink and SigNoz differ?
- Bugsink specializes in error tracking with Sentry SDK compatibility and lightweight self-hosting. SigNoz is a unified observability platform covering logs, metrics, and traces — broader scope, more moving parts. Errors only: Bugsink. Unified monitoring: SigNoz.