Cap CAPTCHA

Cap is a privacy-first, self-hosted CAPTCHA system designed as a modern alternative to traditional third-party verification services. It replaces invasive tracking-based CAPTCHA solutions with a lightweight approach based on proof-of-work and client-side instrumentation. The system can be deployed independently, giving developers full control over user data and verification processes. It integrates easily into web applications and focuses on maintaining usability while preventing automated abuse. Cap avoids reliance on centralized providers, reducing dependency on external services and improving privacy compliance. Its design reflects a shift toward decentralized, user-respecting security mechanisms. It is particularly suited for developers who want transparent and customizable bot protection.

Features

Self-hosted CAPTCHA system for full control
Privacy-first design without third-party tracking
Proof-of-work based bot verification
Lightweight client-side instrumentation
Easy integration into modern web apps
Decentralized alternative to traditional CAPTCHA services

Project Samples

Project Activity

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License

MIT License

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Cap CAPTCHA Web Site

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Additional Project Details

Programming Language

JavaScript

Related Categories

JavaScript Libraries

Registered

2026-04-28

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