head to head · open source
OpenObserve vs evo
OpenObserve has 22,027 GitHub stars, 1,098 forks, 598 open issues and last shipped today. evo has 4,318 stars, 797 forks, 7 open issues and last shipped 12 days ago. OpenObserve leads on adoption by 410% (22,027 vs 4,318 stars). OpenObserve is written in TypeScript under AGPL-3.0; evo is written in Python under GPL-3.0. OpenObserve has attracted 5% as many forks as stars, evo 18%. OpenObserve was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | evo | |
|---|---|---|
| GitHub stars | ★ 22K | ★ 4.3K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-20 | 2026-09-08 |
| Forks | ⑂ 1.1K | ⑂ 797 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenObserve if
- You weight community size — 22K 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 evo if
- You want the evo feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and evo fits your workflow better
About OpenObserve
OpenObserve is an open source observability platform for logs, metrics, traces, analytics, Real User Monitoring, session replay, pipelines, SLO, and LLM observability. It lives in the cloud native infrastructure ecosystem and is described as an alternative to Datadog, Splunk, and Elasticsearch. The project is built in Rust, ships as a single binary, and uses Parquet columnar storage with an S3 native design.
read the full OpenObserve overview →
About evo
evo is a Python package, released under the GPL 3.0 licence, that provides executables and a small library for handling, evaluating and comparing the trajectory output of odometry and SLAM algorithms, and it is aimed at robotics researchers and engineers who need to benchmark trajectories rather than maintain one evaluation script per dataset.
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Frequently asked questions
Is OpenObserve or evo more popular?
OpenObserve has 22,027 GitHub stars and evo has 4,318. OpenObserve has the larger community by that measure.
Are OpenObserve and evo free?
Both are open source. OpenObserve is licensed under AGPL-3.0 and evo under GPL-3.0. Neither carries a licence fee.
What is the difference between OpenObserve and evo?
OpenObserve is written in TypeScript and evo in Python. 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 evo?
Choose OpenObserve if you want the larger community (22,027 stars) or its AGPL-3.0 licence terms. Choose evo if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.