head to head · open source
Cap vs Flipt
Cap has 8,236 GitHub stars, 637 forks, 10 open issues and last shipped 5 days ago. Flipt has 4,935 stars, 317 forks, 42 open issues and last shipped 5 days ago. Cap leads on adoption by 67% (8,236 vs 4,935 stars). Cap is written in JavaScript under a custom or non-standard licence; Flipt is written in Go under a custom or non-standard licence. Cap has attracted 8% as many forks as stars, Flipt 6%. Flipt 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
| Cap | Flipt | |
|---|---|---|
| GitHub stars | ★ 8.2K | ★ 4.9K |
| License | Custom / other | Custom / other |
| Written in | JavaScript | Go |
| Last push | 2026-10-29 | 2026-10-29 |
| Forks | ⑂ 637 | ⑂ 317 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cap if
- You weight community size — 8.2K stars and counting
- You want the Custom / other license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Flipt if
- You want the Flipt feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Go
- You evaluated both and Flipt fits your workflow better
About Cap
Cap Cap is a lightweight, modern open source CAPTCHA alternative using proof of work and instrumentation challenges . It's fast, private, and extremely simple to integrate. Documentation Read the docs , try the demo or deploy on Railway What is Cap? Cap replaces visual captchas with modern, accessible and privacy preserving challenges. No images, no tracking, no dependencies, works everywhere. The default way to use Cap is with the Standalone Docker container. Learn more about how Cap works Why Cap? 250x smaller than hCaptcha 20kb, zero dependencies, loads in milliseconds Privacy first Cap doesn't send any…
About Flipt
The Git native, enterprise ready feature management platform that developers love Docs • Website • Blog • Contributing • Discord [!NOTE] Looking for Flipt v1? You can find the v1 code on the main branch and documentation at docs.flipt.io. Why Flipt v2? Finally, feature flags that work with your existing Git workflow. Flipt v2 is the first truly Git native feature management platform that treats your feature flags as code. Store your flags in your own Git repositories, use your existing branching strategy, and deploy flags alongside your code using the tools you already know and trust. 🚀 Git Native by Design Own…
read the full Flipt overview →
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Frequently asked questions
Is Cap or Flipt more popular?
Cap has 8,236 GitHub stars and Flipt has 4,935. Cap has the larger community by that measure.
Are Cap and Flipt free?
Neither Cap nor Flipt declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Cap and Flipt?
Cap is written in JavaScript and Flipt 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, Cap or Flipt?
Choose Cap if you want the larger community (8,236 stars) or its Custom / other licence terms. Choose Flipt if its feature set, stack or Custom / other licence fits better. Both are self-hostable.