head to head · open source
OpenObserve vs client_python
OpenObserve has 22,777 GitHub stars, 1,179 forks, 598 open issues and last shipped yesterday. client_python has 4,384 stars, 903 forks, 150 open issues and last shipped 6 days ago. OpenObserve leads on adoption by 420% (22,777 vs 4,384 stars). OpenObserve is written in TypeScript under AGPL-3.0; client_python is written in Python under Apache-2.0. OpenObserve has attracted 5% as many forks as stars, client_python 21%. 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 | client_python | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 4.4K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-11-04 | 2026-10-30 |
| Forks | ⑂ 1.2K | ⑂ 903 |
| 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 client_python if
- You want the client_python feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and client_python 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 client_python
Prometheus Python Client The official Python client for Prometheus. Installation This package can be found on PyPI. Documentation Documentation is available on Links Releases: The releases page shows the history of the project and acts as a changelog. PyPI
read the full client_python overview →
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Frequently asked questions
Is OpenObserve or client_python more popular?
OpenObserve has 22,777 GitHub stars and client_python has 4,384. OpenObserve has the larger community by that measure.
Are OpenObserve and client_python free?
Both are open source. OpenObserve is licensed under AGPL-3.0 and client_python under Apache-2.0. Neither carries a licence fee.
What is the difference between OpenObserve and client_python?
OpenObserve is written in TypeScript and client_python 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 client_python?
Choose OpenObserve if you want the larger community (22,777 stars) or its AGPL-3.0 licence terms. Choose client_python if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.