head to head · open source
Unleash vs GrowthBook
Unleash has 13,924 GitHub stars, 919 forks, 39 open issues and last shipped yesterday. GrowthBook has 8,558 stars, 890 forks, 793 open issues and last shipped yesterday. Unleash leads on adoption by 63% (13,924 vs 8,558 stars). Unleash is written in TypeScript under AGPL-3.0; GrowthBook is written in TypeScript under a custom or non-standard licence. Unleash has attracted 7% as many forks as stars, GrowthBook 10%. GrowthBook was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (continuous-delivery), 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
| Unleash | GrowthBook | |
|---|---|---|
| GitHub stars | ★ 14K | ★ 8.6K |
| License | AGPL-3.0 | Custom / other |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 919 | ⑂ 890 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Unleash if
- You weight community size — 14K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick GrowthBook if
- You want the GrowthBook feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and GrowthBook fits your workflow better
About Unleash
Launch the live demo Try Unleash Enterprise for free What is Unleash? Unleash is a powerful open source solution for feature management. It streamlines your development workflow, accelerates software delivery, and empowers teams to control how and when they roll out new features to end users. With Unleash, you can deploy code to production in smaller, more manageable releases at your own pace. Feature flags in Unleash let you test your code with real production data, reducing the risk of negatively impacting your users' experience. It also enables your team to work on multiple features simultaneously without the…
read the full Unleash overview →
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 →
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Frequently asked questions
Is Unleash or GrowthBook more popular?
Unleash has 13,924 GitHub stars and GrowthBook has 8,558. Unleash has the larger community by that measure.
Are Unleash and GrowthBook free?
Both are open source. Unleash is licensed under AGPL-3.0, and GrowthBook has no licence declared in this registry. Both are free to self-host.
What is the difference between Unleash and GrowthBook?
Unleash is written in TypeScript and GrowthBook 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, Unleash or GrowthBook?
Choose Unleash if you want the larger community (13,924 stars) or its AGPL-3.0 licence terms. Choose GrowthBook if its feature set, stack or Custom / other licence fits better. Both are self-hostable.