Open Whisper Systems

Open Whisper Systems
AbbreviationOWS
SuccessorSignal Technology Foundation
FormationJanuary 21, 2013 (2013-01-21)
FounderMoxie Marlinspike
DissolvedJanuary 10, 2018 (2018-01-10)
Location
ProductsSignal, Signal Protocol
FieldsFree and open-source software, Cryptography, Mobile software
Staff2–6
Websitewhispersystems.org
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Open Whisper Systems (OWS) was a software development group that was founded by Moxie Marlinspike in 2013. The group picked up the open source development of TextSecure and RedPhone, and was later responsible for starting the development of the Signal Protocol and the Signal messaging app. In 2018, Signal Messenger was incorporated as an LLC by Moxie Marlinspike and Brian Acton and then rolled under the independent 501(c)(3) non-profit Signal Technology Foundation. Today, the Signal app is developed by Signal Messenger LLC, which is funded by the Signal Technology Foundation.