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Signal Messenger
Signal Messenger


San Francisco, CA, USA · Mountain View, CA, USA


Information Technology · Software


51-200 employees



founded in


Founded by Moxie Marlinspike in 2013, Open Whisper Systems is focused on the development of Signal. Signal is an encrypted communications application for Android and iOS that focuses on advancing secure communications. Signal is easy to use. Using Signal, users can communicate instantly while avoiding SMS fees, create groups so that they can chat in real time with all their friends at once, and share media or attachments all with complete privacy.

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