Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Kleopatra - Kleopatra is a certificate manager and GUI for GnuPG.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
PGP Tool - PGPTool allows you to encrypt and decrypt files. It's free and easy to use.