Tiago Rangel
cap — modern, lightning-quick PoW captcha
Cap is the modern open-source ReCAPTCHA alternative designed for speed. FOSS, lightweight, private and secure.
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Note: This is still a work in progress. It should work in production but you might stumble upon unexpected errors.
Features
- ⚡️ 250x smaller than hCaptcha: Cap is lightning fast, so your pages load instantly and users don't wait around
- 🔒️ Private & GDPR compliant: No more tracking or data collection. Cap is GDPR compliant and keeps your users' data private
- 🌈 Fully customizable: Cap is self-hostable so you can customize both the backend & frontend — or you can just use CSS variables
- 🤖 PoW-based: Cap uses PoW instead of frustrating image puzzles, making it easier for humans and harder for bots
- 💨 Headless mode: Need silent protection? Cap can run invisibly in the background without any user interface
- ☁️ Floating mode: The floating mode keeps your CAPTCHA hidden until it's needed, creating a smoother experience
- 🌳 Truly free: Completely open source under AGPL-3.0. No hidden costs, no premium features, no surprises and completely FOSS
- 🧑 Made for humans, not bots: Cap's web component & server-side library are super easy to integrate into your website