Briar - Secure messaging, anywhere
Flizle - Send and receive anonymous messages to friends like with Sarahah, but with the ability to reply.
Bridgefy - Integrating Bridgefy allows mobile devices to communicate in a secure and efficient way across...
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
The Serval Mesh - It works by using your phone's Wi-Fi to not communicate with other phones on the same network.
SmartMesh - The app allows you to send text messages, images, files and voice messages without internet.