SilentPhone
Type: Tool
A mobile app that offers end-to-end encryption for text and pictures, as well as video chat and conference calling.
Website: https://www.silentcircle.com/products-and-solutions/software/
OS: iOS, Android, Silent OS
Requirements: none
UI language: 11 languages
License: encryption software: free and open software; the rest of the source code is available, but under proprietary software licences