Tool dossier

Capjs

Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.

1 sources 5,201 stars Self-hosted

Product snapshot

How the interface presents itself

Capjs interface screenshot

Positioning

What this project is really offering

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About

Cap offers a revolutionary approach to web security with its privacy-first CAPTCHA alternative that eliminates the need for visual puzzles. Using SHA-256 proof-of-work technology, it provides robust protection while respecting user privacy. Key advantages: Flexible deployment options: Built with developers in mind, Cap is completely open-source under the Apache 2.0 license and can replace reCAPTCHA in minutes. The European-built solution prioritizes user experience without compromising security.

Highlights

The capabilities most worth remembering

01

Ultra-lightweight

02

Complete privacy

03

Fully customizable

04

Modern approach

Evidence

What backs up the editorial summary

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