GPG Suite - Use GPG Suite to encrypt, decrypt, sign and verify files or messages.
Chatlink.com - Anonymous communication platform
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
Autocrypt - Convenient End-to-End Encryption for E-Mail
VSEncryptor - VSEncryptor is an easy to use file and text encryption program.
Protected Trust - Protected Trust works to enable businesses to experience high productivity and security with Microsoft 365 and Surface.