head to head · open source
Cap vs Featurevisor
Cap has 8,236 GitHub stars, 637 forks, 10 open issues and last shipped 5 days ago. Featurevisor has 814 stars, 39 forks, 7 open issues and last shipped 2 days ago. Cap leads on adoption by 912% (8,236 vs 814 stars). Cap is written in JavaScript under a custom or non-standard licence; Featurevisor is written in TypeScript under MIT. Cap has attracted 8% as many forks as stars, Featurevisor 5%. Featurevisor was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (javascript), 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
| Cap | Featurevisor | |
|---|---|---|
| GitHub stars | ★ 8.2K | ★ 814 |
| License | Custom / other | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-29 | 2026-11-01 |
| Forks | ⑂ 637 | ⑂ 39 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cap if
- You weight community size — 8.2K stars and counting
- You want the Custom / other license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Featurevisor if
- You want the Featurevisor feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Featurevisor fits your workflow better
About Cap
Cap Cap is a lightweight, modern open source CAPTCHA alternative using proof of work and instrumentation challenges . It's fast, private, and extremely simple to integrate. Documentation Read the docs , try the demo or deploy on Railway What is Cap? Cap replaces visual captchas with modern, accessible and privacy preserving challenges. No images, no tracking, no dependencies, works everywhere. The default way to use Cap is with the Standalone Docker container. Learn more about how Cap works Why Cap? 250x smaller than hCaptcha 20kb, zero dependencies, loads in milliseconds Privacy first Cap doesn't send any…
About Featurevisor
Feature management with version control Manage your feature flags, experiment variations, variables for remote configuration declaratively from the comfort of your Git workflow. Website Documentation Issues Contributing Changelog Built by @fahad19 and contributors How does it work? Three simple steps to visualize it: 1. Manage your Featurevisor project in a Git repository 1. Build and upload datafiles (static JSON files) to your CDN or custom server 1. Fetch the datafile in your application, and evaluate features using SDKs What do I need to bring to use Featurevisor? A Git repository for managing your project…
read the full Featurevisor overview →
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Frequently asked questions
Is Cap or Featurevisor more popular?
Cap has 8,236 GitHub stars and Featurevisor has 814. Cap has the larger community by that measure.
Are Cap and Featurevisor free?
Both are open source. Cap has no licence declared in this registry, and Featurevisor is licensed under MIT. Both are free to self-host.
What is the difference between Cap and Featurevisor?
Cap is written in JavaScript and Featurevisor 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, Cap or Featurevisor?
Choose Cap if you want the larger community (8,236 stars) or its Custom / other licence terms. Choose Featurevisor if its feature set, stack or MIT licence fits better. Both are self-hostable.