Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
SHAREit - SHAREit allows you to transfer files and data from your phone to another device without having to rely on WiFi or a data plan.
Keybase Chat - End-to-end encrypted chat built into Keybase
ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
Crypho - End-to-end-encrypted messaging and file sharing
Send Anywhere - Send whatever you want, wherever you want