Protonet - Private cloud servers - Slack meets Dropbox in a box
Seald - Keep your conversations secure, everywhere.
Duple - Create your own private cloud at home
Crypho - End-to-end-encrypted messaging and file sharing
Convox - A year ago, I described a strategy we use to build Convox: Integration over Invention. This philosophy leads us to build a platform that integrates existing cloud services instead of building custom software.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.