4 Open Source alternatives to Datadog in 2026
We compare 4 self-hostable tools you can deploy on your own server in minutes, with license, tech stack and a ready-to-copy docker-compose.
Quick comparison
Sorted by featured first, then GitHub stars as a tiebreaker — the same rule we use across the whole site.
| Tool | License | Minimum RAM | Docker | GitHub |
|---|---|---|---|---|
| Grafana Lightest optionMost popular on GitHub1-Click Deploy | AGPL-3.0 | ~256MB | ✅ | ★ ~66,000 |
| SigNoz | MIT | ~4GB | — | ★ ~32,000 |
| Beszel Lightest option100% FOSS | MIT | ~256MB | ✅ | ★ ~25,000 |
| Sentry (self-hosted) | FSL-1.1 (pasa a Apache-2.0 a los 2 años) | ~4GB | ✅ | ★ ~9,500 |
Detailed profile of each alternative
Alternative to Datadog
Observability dashboards, a self-hosted alternative to Datadog.
Alternative to Bugsnag, Datadog
Production error tracking, the official self-hosted version.
Alternative to Datadog, New Relic
Unified metrics + traces + logs, an alternative to Datadog/New Relic.
Alternative to Datadog, New Relic
Ultra-lightweight server monitor, a single binary, a minimal alternative to Datadog.
How much does Datadog cost, and how much can you save?
Datadog charges a recurring monthly fee. Self-hosting the alternative, you only pay for the server — usually a few dollars a month.
Calculate your exact savings in the SaaS Audit →Already know which one you want?
Add Grafana to the Stack Builder and generate a ready-to-deploy docker-compose.yml, alone or alongside the rest of your stack.
Build my stackFrequently asked questions
Do I need Docker to self-host a Datadog alternative?
3 out of 4 have a ready-to-copy docker-compose.yml; the rest use their own installer (each tool's page says which).
How much RAM do I need at minimum?
The lightest option on this list is Grafana, which runs on as little as 256MB of RAM — enough for a cheap VPS.
Are they all 100% free, or are there paid features like on Datadog?
1 out of 4 are 100% FOSS. The rest are Open-Core: the core is free and self-hostable, but some advanced feature may stay paid — we call it out on each tool's page.