Basefolder - Use your home PC as your own personal cloud storage server.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
SIXA - Personal cloud computer, built for developers
Keybase Chat - End-to-end encrypted chat built into Keybase
vagon - vagon is the simplest high-performance computer that anyone can use.
Crypho - End-to-end-encrypted messaging and file sharing