Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.

Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.

Keybase Chat - End-to-end encrypted chat built into Keybase

TrueCrypt - TrueCrypt is a leading cross-platform that provides encryption tools that allow you to migrate any encrypted data to virtual disks images on your systems.

Crypho - End-to-end-encrypted messaging and file sharing