Seald - Keep your conversations secure, everywhere.
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
Crypho - End-to-end-encrypted messaging and file sharing
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
XYplorer - File Manager for Windows