head to head · open source
OpenBB vs keploy
OpenBB has 73,153 GitHub stars, 7,565 forks, 117 open issues and last shipped yesterday. keploy has 18,463 stars, 2,357 forks, 725 open issues and last shipped yesterday. OpenBB leads on adoption by 296% (73,153 vs 18,463 stars). OpenBB is written in Python under a custom or non-standard licence; keploy is written in Go under Apache-2.0. OpenBB has attracted 10% as many forks as stars, keploy 13%. OpenBB was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| OpenBB | keploy | |
|---|---|---|
| GitHub stars | ★ 73K | ★ 18K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 7.6K | ⑂ 2.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenBB if
- You weight community size — 73K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick keploy if
- You want the keploy feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and keploy fits your workflow better
About OpenBB
OpenBB is an open source data platform for investment professionals, built as the Open Data Platform (ODP) and extended by the OpenBB Workspace UI. It lives in the quantitative finance and AI agent ecosystem, integrating equity, crypto, derivatives, fixed income, economics, and options data from proprietary, licensed, and public sources.
read the full OpenBB overview →
About keploy
Keploy is an open source Go project in the API and integration testing ecosystem. It is a developer centric API and integration testing tool that creates safe, isolated production sandboxes for API, integration, and end to end testing. The project records API calls, database queries, and streaming events, then replays them as tests and data mocks. It captures traffic at the network layer with eBPF, so the README says it is code less and language agnostic.
read the full keploy overview →
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Frequently asked questions
Is OpenBB or keploy more popular?
OpenBB has 73,153 GitHub stars and keploy has 18,463. OpenBB has the larger community by that measure.
Are OpenBB and keploy free?
Both are open source. OpenBB has no licence declared in this registry, and keploy is licensed under Apache-2.0. Both are free to self-host.
What is the difference between OpenBB and keploy?
OpenBB is written in Python and keploy in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenBB or keploy?
Choose OpenBB if you want the larger community (73,153 stars) or its Custom / other licence terms. Choose keploy if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.