head to head · open source
GrowthBook vs Friendly Captcha
GrowthBook has 8,376 GitHub stars, 849 forks, 793 open issues and last shipped yesterday. Friendly Captcha has 33 stars, 15 forks, 2 open issues and last shipped 15 days ago. GrowthBook leads on adoption by 25,282% (8,376 vs 33 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 45%. 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 | ★ 8.4K | ★ 33 |
| License | Custom / other | MPL-2.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-03 |
| Forks | ⑂ 849 | ⑂ 15 |
| 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 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
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 Friendly Captcha
Friendly Captcha SDK is the TypeScript library that website developers install to add Friendly Captcha v2 proof of work bot protection to their forms and pages, built for teams that want to block spam and abuse while keeping visitor data private and staying GDPR compliant.
read the full Friendly Captcha overview →
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Frequently asked questions
Is GrowthBook or Friendly Captcha more popular?
GrowthBook has 8,376 GitHub stars and Friendly Captcha has 33. 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 (8,376 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.