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 ## Community Showcase
 
+- [mCaptcha](https://github.com/mCaptcha/mCaptcha/): Proof of work based, privacy focused, libre CAPTCHA system. Crates used: `actix-web`, `sqlx`, `redis`, and `lettre`.
 - [Zero2prod](https://github.com/LukeMathWalker/zero-to-production/) : Source code of zero to production series [zero2prod.com](https://www.zero2prod.com). Paid book but some of the chapters is available online for free. The book compares and explains the chosen technologies, like actix-web and sqlx.
 - [Triox](https://github.com/AaronErhardt/Triox) : A free file hosting server that focuses on speed, reliability and security.
 - [binserve](https://github.com/mufeedvh/binserve) : A fast, secure, and easy to set up static web server written on top of Actix Web with routing, templating, and various other features.