Seahorse

Seahorse is a GNOME front-end application for managing PGP and SSH keys. Seahorse integrates with Nautilus, gedit and Evolution for encryption, decryption and other operations. It has HKP and LDAP key...
Language(s): N/A
Operating system(s): Unix, Linux
License: GNU GPLv2+

Signal

Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and Signal Messenger LLC. It uses the Internet to send one-to-one and group messages, which can include files,...
Language(s): N/A
Operating system(s): Android 4.4 or later, iOS 9.0 or later, Windows 7 or later (64-bit), Mac OS 10.9 or later,] Linux distributions
License: Clients: GPLv3, Server: AGPLv3