Not to be confused with Whisper Systems, a company that was acquired by Twitter, or Whisper, a product of WhisperText LLC.
Open Whisper Systems
Abbreviation
OWS
Successor
Signal Technology Foundation
Formation
January 21, 2013; 11 years ago (2013-01-21)[1]
Founder
Moxie Marlinspike[2]
Dissolved
January 10, 2018; 6 years ago (2018-01-10)[3]
Purpose
Software development[2]
Location
San Francisco, CA[4]
Products
Signal, Signal Protocol
Fields
Free and open-source software, Cryptography, Mobile software
Staff
2–6[5][6]
Website
whispersystems.org
Open Whisper Systems (abbreviated OWS[7]) was a software development group[8] 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[9] 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 501c3 non-profit Signal Technology Foundation. Today, the Signal app is developed by Signal Messenger LLC, which is funded by the Signal Technology Foundation.[5][10]
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^ abCite error: The named reference mashable1 was invoked but never defined (see the help page).
^"Signal Technology Foundation". OpenCorporates. Delaware Department of State: Division of Corporations. 15 July 2018. Retrieved 13 February 2019.
^Lee, Micah (22 June 2016). "Battle of the Secure Messaging Apps: How Signal Beats WhatsApp". The Intercept. First Look Media. Retrieved 17 July 2016.
^ abCite error: The named reference signal-foundation was invoked but never defined (see the help page).
^Marlinspike, Moxie (18 September 2017). "Moxie Marlinspike: Trust No One". TechCrunch Disrupt SF 2017 (Interview). Interviewed by Devin Coldewey. San Francisco, CA: Oath Inc. 3:50. Retrieved 19 September 2017.
^"Signal Privacy Policy". Open Whisper Systems. Archived from the original on 31 January 2018. Retrieved 31 January 2018.
^Cite error: The named reference ONeill-2017-01-03 was invoked but never defined (see the help page).
^Perrin, Trevor (9 June 2015). TextSecure Protocol: Present and Future (Video). NorthSec. Event occurs at 0:21. Retrieved 24 September 2016.
^Cite error: The named reference propublica was invoked but never defined (see the help page).
and 23 Related for: Open Whisper Systems information
OpenWhisperSystems (abbreviated OWS) was a software development group that was founded by Moxie Marlinspike in 2013. The group picked up the open source...
under open-source licenses after the acquisition. An independent group called OpenWhisperSystems later picked up the development of this open-source...
in January 2013. OpenWhisperSystems started working to bring TextSecure to iOS in March 2013. In February 2014, OpenWhisperSystems introduced the second...
conversations. The protocol was developed by OpenWhisperSystems in 2013 and was introduced in the open-source TextSecure app, which later became Signal...
Retrieved November 19, 2014. "OpenWhisperSystems partners with WhatsApp to provide end-to-end encryption". OpenWhisperSystems. November 18, 2014. Archived...
Algorithm was developed by Trevor Perrin and Moxie Marlinspike (OpenWhisperSystems) in 2013 and introduced as part of the Signal Protocol in February...
firm made WhisperSystems' apps open source. Marlinspike left Twitter in early 2013 and founded OpenWhisperSystems as a collaborative open source project...
with their contacts. 2016 April 5 Product, Security WhatsApp and OpenWhisperSystems announce that they finish adding end-to-end encryption to "every...
swimming, outdoor swimming in open lakes, rivers, and oceans OpenWhisperSystems, a nonprofit open-source software group Open Window School, a private school...
beta". OpenWhisperSystems. Retrieved 22 March 2017. Marlinspike, Moxie (13 March 2017). "Video calls for Signal out of beta". OpenWhisperSystems. Retrieved...
WhatsApp could disclose the content of these messages. WhatsApp and OpenWhisperSystems officials disagreed with this assessment. After complaints from 73...
Moxie (24 February 2014). "The New TextSecure: Privacy Beyond SMS". OpenWhisperSystems. Retrieved 12 December 2015. "SimpleX Chat v4.6 – with hidden profiles...
"protect free expression and enable secure global communication through open source privacy technology." Its subsidiary, Signal Messenger LLC, is responsible...
Public Integrity, Truthout, the LEAP Encryption Access Project, OpenWhisperSystems, Tails, and the Tor Project. In May 2013, FPF raised over $100,000...
(14 February 2017). "Video calls for Signal now in public beta". OpenWhisperSystems. Retrieved 15 February 2017. Mott, Nathaniel (14 March 2017). "Signal's...
Retrieved February 15, 2016. Note: The author uses "OpenWhisper" when referring to OpenWhisperSystems. Rushe, Dominic (September 18, 2014). "Google and...
fronting," a crucial way for tools to evade censors". Access Now. "OpenWhisperSystems >> Blog >> Doodles, stickers, and censorship circumvention for Signal...
Signal, the messaging and voice calling application supported by OpenWhisperSystems' encryption protocol, had stopped working in Egypt. Digital security...
has a native web browser (Webster, which is WebKit-based), email client (Whisper), media player, IDE, and many more applications. Another version of Syllable...
(9 December 2013). "TextSecure, Now With 10 Million More Users". OpenWhisperSystems. Archived from the original on 25 February 2014. Retrieved 1 March...
users. In May 2023, OpenAI launched an iOS app for ChatGPT. The app supports chat history syncing and voice input (using Whisper, OpenAI's speech recognition...
their early live performances; and Sound Asleep (1999), also known as the Whisper EP. Their demos got them airplay on the local modern rock station in Little...
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