Galaxia - Mini social networks for all your personas
Hamster Pad - A social network built on top of Slack
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!
Kaboom by Hotspot Shield - Share messages & photos that disappear on any social network
Caret - Better Markdown Editor for Mac / Windows / Linux
Tsu - Social that pays