head to head · open source
GrowthBook vs FeatBit
GrowthBook has 8,558 GitHub stars, 890 forks, 793 open issues and last shipped yesterday. FeatBit has 1,954 stars, 150 forks, 26 open issues and last shipped yesterday. GrowthBook leads on adoption by 338% (8,558 vs 1,954 stars). GrowthBook is written in TypeScript under a custom or non-standard licence; FeatBit is written in C# 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.
← all 20902 open source comparisons
Side by side
| GrowthBook | FeatBit | |
|---|---|---|
| GitHub stars | ★ 8.6K | ★ 2.0K |
| License | Custom / other | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 890 | ⑂ 150 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick GrowthBook if
- You weight community size — 8.6K 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 C#
- You evaluated both and FeatBit fits your workflow better
About GrowthBook
Open Source Feature Flags, Experimentation, and Product Analytics Create a free GrowthBook Cloud account to get started quickly. Or run it yourself with: Then visit View the full Self Hosting Instructions for more details. This pulls our prebuilt public Docker image and needs no registry credentials. If you instead build the image from the Dockerfile in this repo, its hardened base images come from Docker's dhi.io registry, which requires a one time docker login dhi.io with any free Docker account — see Building from source. Our Philosophy The top 1% of companies spend thousands of hours building their own in…
read the full GrowthBook overview →
About FeatBit
Documentation Community (Discord) LinkedIn Email Try FeatBit Online Try FeatBit immediately with our online demo. The video below shows you how to get started quickly. About FeatBit FeatBit is an open source feature flags management tool that empowers developers: Ship Code Safely . Mitigate risks with Production Testing, roll out features to 1% of users initially then expanding progressively, and ensure instant error recovery without redeployment. Targeted Experiences . Giving you control over who sees each feature and when they see it. Release features to specific target users, and continuously measure and…
read the full FeatBit overview →
More in Security & Privacy
Related comparisons
More Application Security projects
Compare either of these against the rest of the Application Security field.
Frequently asked questions
Is GrowthBook or FeatBit more popular?
GrowthBook has 8,558 GitHub stars and FeatBit has 1,954. 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 C#. 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 (8,558 stars) or its Custom / other licence terms. Choose FeatBit if its feature set, stack or MIT licence fits better. Both are self-hostable.