WackoWiki - WackoWiki is a light and easy to install multilingual Wiki-engine.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Diaspora - The online social world where you are in control.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.