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

Telbee.io - telbee adds voice messaging to podcasts, websites, social media and email to easily hear from and build human relationships with your customers and community - save time, reduce frustration, and gain sales, understanding and fans

Seald - Keep your conversations secure, everywhere.

Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.

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

spoonity - Spoonity is a white labelled, POS-integrated loyalty solution for the QSR business.