Wickr - Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender...
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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.
Discord - Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Snapchat - Real-time picture chatting