head to head · open source
OpenObserve vs moosestack
OpenObserve has 22,777 GitHub stars, 1,179 forks, 598 open issues and last shipped yesterday. moosestack has 591 stars, 32 forks, 1 open issues and last shipped 2 days ago. OpenObserve leads on adoption by 3,754% (22,777 vs 591 stars). OpenObserve is written in TypeScript under AGPL-3.0; moosestack is written in Rust under MIT. OpenObserve has attracted 5% as many forks as stars, moosestack 5%. OpenObserve was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, metrics), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenObserve | moosestack | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 591 |
| License | AGPL-3.0 | MIT |
| Written in | TypeScript | Rust |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 1.2K | ⑂ 32 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenObserve if
- You weight community size — 23K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick moosestack if
- You want the moosestack feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and moosestack fits your workflow better
About OpenObserve
Open source Datadog alternative for logs, metrics, traces, and frontend monitoring. Modern observability platform: 10x easier, 140x lower storage cost, high performance, petabyte scale. Cloud · Documentation · Slack · Quickstart OpenObserve (O2) is a cloud native observability platform for logs, metrics, traces, analytics, Real User Monitoring (RUM), and AI/LLM observability. It's a cost effective alternative to Datadog, Splunk, and Elasticsearch for teams that need full observability without the complexity or cost — with Parquet columnar storage and an S3 native design that cuts storage costs by up to 140x…
read the full OpenObserve overview →
About moosestack
[!IMPORTANT] MooseStack has reached end of life and is no longer actively maintained. As users, we loved the idea of the MooseStack harness. But as coding agents became our primary users over the last couple of years, results from the Agent Experience Platform (AXP) made it clear that they would rather free solo on the underlying tools than use our product. We cannot in good faith keep building tools that make their work harder. Thank you to everyone who supported MooseStack and helped us test the idea. You can learn more about AXP in the docs. MooseStack The developer agent harness for ClickHouse — MooseStack…
read the full moosestack overview →
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Frequently asked questions
Is OpenObserve or moosestack more popular?
OpenObserve has 22,777 GitHub stars and moosestack has 591. OpenObserve has the larger community by that measure.
Are OpenObserve and moosestack free?
Both are open source. OpenObserve is licensed under AGPL-3.0 and moosestack under MIT. Neither carries a licence fee.
What is the difference between OpenObserve and moosestack?
OpenObserve is written in TypeScript and moosestack in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenObserve or moosestack?
Choose OpenObserve if you want the larger community (22,777 stars) or its AGPL-3.0 licence terms. Choose moosestack if its feature set, stack or MIT licence fits better. Both are self-hostable.