mCaptcha
MCaptcha lets you run privacy-focused proof-of-work CAPTCHA system entirely on your own server.
Overview
A no-nonsense CAPTCHA system with seamless UX | Backend component mCaptcha is proof-of-work based captcha system that is privacy focused and fully automated. mCaptcha
Proof of work based, privacy respecting CAPTCHA system with a kickass UX. The project has 2K+ GitHub stars and is licensed under AGPL-3.0.
Normalized Features
Source: tool-features-normalized.json
docker, docker compose.
Deploy
Related Security & Authentication Tools
View all 159 →
Ghidra
66KA free, open-source software reverse engineering framework created by the NSA — disassemble, decompile, and analyze compiled code on any platform.
PocketBase
58KOpen-source backend in a single 12 MB binary — realtime database, auth, file storage, and admin dashboard. No Docker, no Postgres, just run it.
Vaultwarden
57KLightweight, self-hosted Bitwarden-compatible password manager written in Rust. Uses 10x less RAM than the official server and works with all Bitwarden clients.
Zen Browser
41KZen Browser is a privacy-focused, beautifully designed Firefox fork with a unique sidebar tab layout, split views, and built-in content blocking — no telemetry, no tracking.
Vault
35KManage secrets and protect sensitive data. Securely store and control access to tokens, passwords, certificates, and encryption keys.
KeyCloak
33KOpen source identity and access management. Add authentication to applications and secure services with minimum effort.