Disk Drill by Cleverfiles - Recover any type of deleted files in Windows & Mac including Office documents, messages, and media files quickly and easily.
Seald - Keep your conversations secure, everywhere.
MiniTool Power Data Recovery - MiniTool Power Data Recovery is a freemium data recovery tool that works quite well considering the basic version is the only free aspect of the app.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Wondershare Data Recovery - Recoverit data recovery software enables you to recover all data types in any data loss scenarios easy,fast,powerful for Windows computer with 96% high recovery rate.
Keybase Chat - End-to-end encrypted chat built into Keybase