Keybase Chat - End-to-end encrypted chat built into Keybase
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.
MagicPad - Free, simple, and private, offline text encryption suite.
Seald - Keep your conversations secure, everywhere.
Tresorit - Encrypted cloud storage for your confidential files. Using Tresorit, files are encrypted before being uploaded to the cloud. Start encrypting files for free.