Libraries tagged by proof-of-work

TYPO3 form element for spam protection by utilizing the proof-of-work mechanism Altcha.

Go to Download

PHP port of the Cap proof-of-work captcha server. Wire-compatible with @cap.js/widget.

Go to Download

ALTCHA proof-of-work spam protection for Laravel — drop-in middleware, validation rule, and challenge endpoint.

Go to Download

Altcha Captcha for Powermail - Accessible and GDPR compliant proof-of-work (pow) captcha for powermail, no external service required

Go to Download

Hashcash implementation in PHP.

Go to Download

Local Proof-of-Work CAPTCHA for Flarum – protect login, registration and password reset without any external service

Go to Download

Laravel wrapper for Cap (tiagozip/cap) — self-hosted CAPTCHA alternative

Go to Download

A captcha decided between the browser and your own application: proof of work, timing and a honeypot, with no third-party service.

Go to Download

A CodeIgniter4 library for ALTCHA, a GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.

Go to Download

A PHP implementation of Cap - a lightweight, modern open-source CAPTCHA alternative using SHA-256 proof-of-work with comprehensive testing suite

Go to Download

Self-hosted CAPTCHA using Cap (proof-of-work) for registration and login protection

Go to Download

Statamic addon for Cap CAPTCHA (proof-of-work) integration

Go to Download

ALTCHA captcha integration for Statamic CMS

Go to Download

Official Laravel SDK for captchaapi.eu — EU-hosted, GDPR-compliant proof-of-work CAPTCHA with native Livewire support.

Go to Download

Application-agnostic anti-bot protection for Laravel: risk-based scoring, sliding-window rate limiting, proof-of-work challenges, temporary blocking, and network-verified search engine crawler bypass (Googlebot, Bingbot, YandexBot).

Go to Download