A secure text messaging application for Android.
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.github Add template for pull request descriptions Feb 19, 2016
.tx Updated translations Nov 20, 2015
apntool update APN list, fix MMSC issues Mar 12, 2015
artwork migrate AlertDialog to material-dialogs Mar 25, 2015
assets Update APN database from latest CM list Jan 30, 2016
gradle/wrapper Gradle wrapper, all. Jul 29, 2015
jni Resolve service deadlock issue Nov 6, 2015
libs Resolve service deadlock issue Nov 6, 2015
res Merge pull request #1 from WhisperSystems/master Feb 20, 2016
src Merge pull request #1 from WhisperSystems/master Feb 20, 2016
test Fix broken test Dec 23, 2015
.gitattributes materialize conversation item indicators Nov 18, 2014
.gitignore Support for Signal calls. Sep 30, 2015
AndroidManifest.xml Bump version to 3.12.0 Feb 19, 2016
BUILDING.md Some clarifications for BUILDING.md Dec 8, 2015
CONTRIBUTING.md Improve CONTRIBUTING.md Feb 19, 2016
LICENSE Initial Project Import Dec 20, 2011
NOTICE Initial Project Import Dec 20, 2011
README.md Merge pull request #1 from WhisperSystems/master Feb 20, 2016
build.gradle Update build.gradle Feb 20, 2016
gradlew gradle wrapper 1.10, android plugin 0.8, android support 19.0.1 // Feb 19, 2014
gradlew.bat gradle wrapper 1.10, android plugin 0.8, android support 19.0.1 // Feb 19, 2014
proguard-appcompat-v7.pro Fix the connectedCheck build target Apr 22, 2015
proguard-automation.pro add dev buildType Jun 25, 2015
proguard-dagger.pro refactor proguard rules Apr 2, 2015
proguard-glide.pro Use Glide for loading part thumbnails Apr 21, 2015
proguard-google-play-services.pro refactor proguard rules Apr 2, 2015
proguard-jackson.pro refactor proguard rules Apr 2, 2015
proguard-retrofit.pro Support for Signal calls. Sep 30, 2015
proguard-rounded-image-view.pro refactor proguard rules Apr 2, 2015
proguard-shortcutbadger.pro Add proguard rule for ShortcutBadger now that they use reflection. May 8, 2015
proguard-spongycastle.pro Support for Signal calls. Sep 30, 2015
proguard-sqlite.pro refactor proguard rules Apr 2, 2015
proguard-square-okhttp.pro refactor proguard rules Apr 2, 2015
proguard-square-okio.pro refactor proguard rules Apr 2, 2015
proguard.cfg Switch RedPhone view<->service interaction to use event bus Nov 5, 2015
settings.gradle Break out libtextsecure Mar 2, 2015


Signal Android

Signal is a messaging app for simple private communication with friends.

Signal uses your phone's data connection (WiFi/3G/4G) to communicate securely, optionally supports plain SMS/MMS to function as a unified messenger, and can also encrypt the stored messages on your phone.

Currently available on the Play store.

Get it on Google Play

#WebSocket Support#

This branch adds rudimentary WebSocket-ONLY support to Signal Private Messenger. In order to build a modified version of libtextsecure is needed, for that checkout my fork

and run: ./gradlew tasks installArchives to install in local maven directory.

Contributing Bug reports

We use GitHub for bug tracking. Please search the existing issues for your bug and create a new one if the issue is not yet tracked!


Joining the Beta

Want to live life on the bleeding edge and help out with testing?

You can subscribe to Signal Android Beta releases here: https://play.google.com/apps/testing/org.thoughtcrime.securesms

If you're interested in a life of peace and tranquility, stick with the standard releases.

Contributing Translations

Interested in helping to translate Signal? Contribute here:


Contributing Code

Instructions on how to setup your development environment and build Signal can be found in BUILDING.md.

If you're new to the Signal codebase, we recommend going through our issues and picking out a simple bug to fix (check the "easy" label in our issues) in order to get yourself familiar. Also please have a look at the CONTRIBUTING.md, that might answer some of your questions.

For larger changes and feature ideas, we ask that you propose it on the unofficial Community Forum for a high-level discussion with the wider community before implementation.

This repository is set up with BitHub, so you can make money for committing to Signal. The current BitHub price for an accepted pull request is:

Current BitHub Price

Contributing Ideas

Have something you want to say about Open Whisper Systems projects or want to be part of the conversation? Get involved in the community forum.

Contributing Funds


You can add funds to BitHub to directly help further development efforts.



For troubleshooting and questions, please visit our support center!



Looking for documentation? Check out the wiki!


Legal things

Cryptography Notice

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.


Copyright 2011 Whisper Systems

Copyright 2013-2016 Open Whisper Systems

Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html