SimpleLogin : With email aliases , you can be anonymous online and protect your inbox against spams and phishing. Open-source.
Zulip : Powerful slack-like open source group chat
Dendron : Dendron is an open-source, local-first, markdown-based, note-taking tool. It's a personal knowledge management solution (PKM) built specifically for d...
DokuWiki : DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Postal : Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready f...
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.