head to head · open source
GrowthBook vs FeatBit
GrowthBook has 8,376 GitHub stars, 849 forks, 793 open issues and last shipped yesterday. FeatBit has 1,905 stars, 144 forks, 26 open issues and last shipped yesterday. GrowthBook leads on adoption by 340% (8,376 vs 1,905 stars). GrowthBook is written in TypeScript under a custom or non-standard licence; FeatBit is written in TypeScript under MIT. GrowthBook has attracted 10% as many forks as stars, FeatBit 8%. GrowthBook was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ab-testing, continuous-delivery, experimentation), 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
| GrowthBook | FeatBit | |
|---|---|---|
| GitHub stars | ★ 8.4K | ★ 1.9K |
| License | Custom / other | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 849 | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick GrowthBook if
- You weight community size — 8.4K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick FeatBit if
- You want the FeatBit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and FeatBit fits your workflow better
About GrowthBook
GrowthBook is an open source platform for feature flags, A/B experimentation, and product analytics that product, data, and platform teams can either consume through a hosted cloud account or run entirely on their own infrastructure.
read the full GrowthBook overview →
About FeatBit
FeatBit is an open source feature flag management tool written in TypeScript and released under the MIT license. It lives in the continuous delivery and experimentation ecosystem, where teams use feature flags, A/B testing, entitlements, and feature toggles to control software releases. The project is a self hostable feature flag platform, and it provides a web portal, official SDKs, and deployment material for Docker and Kubernetes.
read the full FeatBit overview →
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Frequently asked questions
Is GrowthBook or FeatBit more popular?
GrowthBook has 8,376 GitHub stars and FeatBit has 1,905. GrowthBook has the larger community by that measure.
Are GrowthBook and FeatBit free?
Both are open source. GrowthBook has no licence declared in this registry, and FeatBit is licensed under MIT. Both are free to self-host.
What is the difference between GrowthBook and FeatBit?
GrowthBook is written in TypeScript and FeatBit in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, GrowthBook or FeatBit?
Choose GrowthBook if you want the larger community (8,376 stars) or its Custom / other licence terms. Choose FeatBit if its feature set, stack or MIT licence fits better. Both are self-hostable.