Signal Foundation

Signal Foundation
Signal Technology Foundation
Predecessor	Open Whisper Systems
Founded	January 10, 2018
Founders	Moxie Marlinspike; Brian Acton;
Type	501(c)(3) nonprofit organization
Tax ID no.	82-4506840
Focus	Open-source privacy technology
Headquarters	650 Castro Street, Suite 120-223
Location	Mountain View, CA;
Area served	Global
Key people	Brian Acton; (Executive Chairman); Meredith Whittaker; (President);
Subsidiaries	Signal Messenger LLC.
Revenue (2021)	$12,765,380
Expenses (2021)	$33,117,092
Staff (2020)	36
Website	signalfoundation.org

The Signal Technology Foundation, commonly known as the Signal Foundation,^[2]^[3] is an American non-profit organization founded in 2018 by Moxie Marlinspike and Brian Acton.^[4] Its mission is to "protect free expression and enable secure global communication through open source privacy technology."^[7] Its subsidiary, Signal Messenger LLC, is responsible for the development of the Signal messaging app and the Signal Protocol.

^ "Signal Technology Foundation". OpenCorporates. Delaware Department of State: Division of Corporations. 15 July 2018. Retrieved 13 February 2019.
^ ^a ^b ^c ^d "Signal Technology Foundation". Nonprofit Explorer. Pro Publica Inc. 9 May 2013. Retrieved 5 July 2022.
^ ^a ^b ^c "Statement of Information" (PDF). businesssearch.sos.ca.gov. California Secretary of State. 28 August 2018. Retrieved 13 February 2019.
^ ^a ^b Cite error: The named reference blog-announcement was invoked but never defined (see the help page).
^ Cite error: The named reference President blog was invoked but never defined (see the help page).
^ Wiener, Anna (19 October 2020). "Taking Back Our Privacy". The New Yorker. Retrieved 25 October 2020.
^ "Signal Foundation". signalfoundation.org. Retrieved 25 October 2023.