Open WhisperSystems >> Open WhisperSystems

Security, simplified.

Open Source security for mobile devices.

Get started.

Need some privacy?

Secure your communication with our mobile applications. It's that simple.

Encrypted Communication And Storage

Our projects are focused on creating simple and easy-to-use tools for secure mobile communication and secure mobile storage.

Open Source Software

The source for all our projects is open, so that anyone can easily verify they work as advertised. They are licensed GPLv3 and will always be free.

Private calls for Android

RedPhone provides end-to-end encryption for your calls, securing your conversations so that nobody can listen in.

Use the default system dialer and contacts apps to make calls as you normally would.
RedPhone will give you the opportunity to upgrade to encrypted calls whenever possible.
RedPhone calls are encrypted end-to-end, but function just like you're used to.
RedPhone uses your normal phone number to make and receive calls, so you don't need yet another identifier.

Install RedPhone Get RedPhone Source

Private text and chat for Android

TextSecure encrypts your text and chat messages over the air and on your phone.

A full replacement for the default text messaging application.
All messages are encrypted locally, so if your phone is lost, your messages will be safe.
Messages to other TextSecure users are encrypted over the air, protecting your communication in transit.

Install TextSecure Get TextSecure Source

Any questions?

Our answers are plaintext…

Ask the community