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.

Vicinity - High Quality Ambient Background Sounds in your macOS MenuBar

pump.io - A stream server that does most of what people really want from a social network.

chatback - Automatically connect to people around you & chat

Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.

BuddyPress - WordPress social networking in a box.