Signal (software)
 |
|
| Developer(s) | Open Whisper Systems and contributors |
|---|---|
| Initial release | July 29, 2014 |
| Stable release |
Android 4.2.4 (April 5, 2017) |
| Preview release | Chrome app 0.37.0 (April 20, 2017) |
| Repository | github |
| Development status | Active |
| Platform | |
| Available in | 31 languages |
| Type | Encrypted voice calling, video calling and instant messaging |
| License | |
| Website | signal |
Android 4.2.4 (April 5, 2017)
Signal is an encrypted communications application for Android and iOS. It uses the Internet to send one-to-one and group messages, which can include images and video messages, and make one-to-one voice and video calls. Signal uses standard cellular mobile numbers as identifiers, and uses end-to-end encryption to secure all communications to other Signal users. The applications include mechanisms by which users can independently verify the identity of their messaging correspondents and the integrity of the data channel. In addition, a Chrome app that can link with a Signal client has been released.
Signal is developed by Open Whisper Systems. The clients are published as free and open-source software under the GPLv3 license. The server code is published under the AGPLv3 license.
Signal is the successor of an encrypted voice calling app called RedPhone and an encrypted texting program called TextSecure. The beta versions of RedPhone and TextSecure were first launched in May 2010 by Whisper Systems, a startup company co-founded by security researcher Moxie Marlinspike and roboticist Stuart Anderson. Whisper Systems also produced a firewall and tools for encrypting other forms of data. All of these were proprietary enterprise mobile security software and were only available for Android.
...
Wikipedia