LibreNMS : A fully featured network monitoring system that provides a wealth of features and device support.
UnoCSS : UnoCSS is the instant atomic CSS engine, that is designed to be flexible and extensible. The core is un-opinionated and all the CSS utilities are prov...
Zulip : Powerful slack-like open source group chat
Mailtrain : Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, ...
Docusaurus : Easy to Maintain Open Source Documentation Websites
CryptoZombies is a free, open source, interactive code school that teaches you to build games on Ethereum. The course is designed for beginners to Solidity and starts off with the absolute basics.