Beszel vs Sentry (self-hosted): which one to choose in 2026?
Both are open source alternatives to Datadog. We compare license, tech stack and features to help you decide which fits your team best.
| Beszel | Sentry (self-hosted) | |
|---|---|---|
| Category | Monitoring, Logs & Errors | Monitoring, Logs & Errors |
| License | MIT | FSL-1.1 (pasa a Apache-2.0 a los 2 años) |
| GitHub stars | ~25k | ~9.5k |
| Tech stack | Go, SQLite | Python, ClickHouse, Kafka |
| Replaces | Datadog, New Relic | Bugsnag, Datadog |
Beszel has more GitHub stars, which usually indicates a larger community (not necessarily that it's the best option for your use case).
Beszel
Ultra-lightweight server monitor, a single binary, a minimal alternative to Datadog.
Pros
- A single binary with no dependencies, with lightweight agents per monitored server
Things to consider
- No application error tracking, infrastructure only
Sentry (self-hosted)
Production error tracking, the official self-hosted version.
Pros
- It's the original product, with no feature cuts
Things to consider
- Heavy stack: needs plenty of RAM and several services
Key features
Beszel
- Single binary/container, no dependencies
- Lightweight agents per monitored server
- CPU/RAM/disk/network usage history
Sentry (self-hosted)
- Smart grouping of repeated errors
- Performance monitoring traces
- Official SDKs for all major languages
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