telephonaki - Get your own Greek landline number in just a minute

Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

Viber Wink - Ephemeral disappearing messaging app from Viber

SafeNote - Encrypt and send files and notes with a link that automatically destruct after being read. SafeNote is a free web-based service that allows you to share a note or a file with confidentiality. There is no way to spying on you even to a hacker.

Wickr - Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender...

Safe Text - A texting service that is built with state-of-the-art technology to ensure your privacy and...