head to head · open source
GrowthBook vs Friendly Captcha
GrowthBook has 8,558 GitHub stars, 890 forks, 793 open issues and last shipped yesterday. Friendly Captcha has 37 stars, 17 forks, 2 open issues and last shipped yesterday. GrowthBook leads on adoption by 23,030% (8,558 vs 37 stars). GrowthBook is written in TypeScript under a custom or non-standard licence; Friendly Captcha is written in TypeScript under MPL-2.0. GrowthBook has attracted 10% as many forks as stars, Friendly Captcha 46%. GrowthBook 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
| GrowthBook | Friendly Captcha | |
|---|---|---|
| GitHub stars | ★ 8.6K | ★ 37 |
| License | Custom / other | MPL-2.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 890 | ⑂ 17 |
| 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 Friendly Captcha if
- You want the Friendly Captcha feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Friendly Captcha 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 Friendly Captcha
Friendly Captcha SDK The SDK that is used to integrate Friendly Captcha v2 into your website. This is the code that runs on your website, inserting the captcha widget. ☝️ This is the SDK for Friendly Captcha v2 only . If you are looking for the v1 SDK, you can find that here. Installation You can then use it in your library. CommonJS You can also require the SDK if your environment uses CommonJS. Documentation The documentation can be found in our Developer Hub, and the Getting Started guide. Development If you want to develop this SDK itself the following commands are useful sdktest We include more proper end…
read the full Friendly Captcha overview →
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Frequently asked questions
Is GrowthBook or Friendly Captcha more popular?
GrowthBook has 8,558 GitHub stars and Friendly Captcha has 37. GrowthBook has the larger community by that measure.
Are GrowthBook and Friendly Captcha free?
Both are open source. GrowthBook has no licence declared in this registry, and Friendly Captcha is licensed under MPL-2.0. Both are free to self-host.
What is the difference between GrowthBook and Friendly Captcha?
GrowthBook is written in TypeScript and Friendly Captcha 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 Friendly Captcha?
Choose GrowthBook if you want the larger community (8,558 stars) or its Custom / other licence terms. Choose Friendly Captcha if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.