Silence

NOTE: App has is not been developed any more and its source repo is no longer available.

Silence is an SMS/MMS application that allows you to protect your privacy while communicating with friends.
Using Silence, you can send SMS messages and share media or attachments with complete privacy.

Features:
• Easy. Silence works like any other SMS application. There's nothing to sign up for and no new service your friends need to join.
• Reliable. Silence communicates using encrypted SMS messages. No servers or internet connection required.
• Private. Silence provides end-to-end encryption for your messages using the painstakingly engineered Signal encryption protocol.
• Safe. All messages are encrypted locally, so if your phone is lost or stolen, your messages are protected.
• Open Source. Silence is Free and Open Source, enabling anyone to verify its security by auditing the code.