Ask.fm - Curious? Just ask! Openly or anonymously.
Briar - Secure messaging, anywhere
Tellonym - Tellonym is the most honest place on the internet.
Bridgefy - Integrating Bridgefy allows mobile devices to communicate in a secure and efficient way across...
Flizle - Send and receive anonymous messages to friends like with Sarahah, but with the ability to reply.
The Serval Mesh - It works by using your phone's Wi-Fi to not communicate with other phones on the same network.