Developing open source privacy technology that protects free expression and enables secure global communication.

Our Mission

To develop open source privacy technology that protects free expression and enables secure global communication.

Privacy First

With our flagship product, Signal Messenger, we believe championing user privacy means keeping your data out of anyone’s hands, including our own, rather than “responsibly” managing your data.

Open Source

As a committed member of the open source community, we publish our technology and share knowledge to encourage other companies to adopt it in their own products and services.

Nonprofit

Signal Foundation is a 501c3 nonprofit. We’re proud of that designation and we’re out to prove that a nonprofit can innovate and scale as well as any business driven by a profit motive.

Why Foundation + LLC Structure?

We formed Signal Foundation as the parent of Signal Messenger because we aspire to one day promote other privacy preserving projects that ladder to the same mission.

Free for Everyone

We rely on the support of the community to deliver Signal Messenger as a free app to millions around the world. Will you support the cause?

Why Foundation + LLC Structure?

We formed Signal Foundation as the parent of Signal Messenger because we aspire to one day promote other privacy preserving projects that ladder to the same mission.

Free for Everyone

We rely on the support of the community to deliver Signal Messenger as a free app to millions around the world. Will you support the cause?

Board Members

Portrait of Brian Acton

Brian Acton

Brian Acton is an entrepreneur and computer programmer who co-founded the messaging app WhatsApp in 2009. After the app was sold to Facebook in 2014, Acton decided to leave the company due to differences surrounding the use of customer data and targeted advertising to focus his efforts on non-profit ventures. In February of 2018, Acton invested $50 million of his own money to start the Signal Foundation alongside Moxie Marlinspike. Signal Foundation is a nonprofit organization dedicated to doing the foundational work around making private communication accessible, secure and ubiquitous.

Prior to founding WhatsApp and Signal Foundation, Acton worked as a software builder for more than 25 years at companies like Apple, Yahoo, and Adobe.

Portrait of Moxie Marlinspike

Moxie Marlinspike

Moxie Marlinspike is the founder of Signal.

Portrait of Meredith Whittaker

Meredith Whittaker

Meredith Whittaker is Signal's President and a member of the Signal Foundation Board of Directors.

She has over 17 years of experience in tech, spanning industry, academia, and government. Before joining Signal as President, she was the Minderoo Research Professor at NYU, and served as the Faculty Director of the AI Now Institute which she co-founded. Her research and scholarly work helped shape global AI policy and shift the public narrative on AI to better recognize the surveillance business practices and concentration of industrial resources that modern AI requires. Prior to NYU, she worked at Google for over a decade, where she led product and engineering teams, founded Google's Open Research Group, and co-founded M-Lab, a globally distributed network measurement platform that now provides the world's largest source of open data on internet performance. She also helped lead organizing at Google. She was one of the core organizers pushing back against the company's insufficient response to concerns about AI and its harms, and was a central organizer of the Google Walkout. She has advised the White House, the FCC, the City of New York, the European Parliament, and many other governments and civil society organizations on privacy, security, artificial intelligence, internet policy, and measurement. And she recently completed a term as Senior Advisor on AI to the Chair at the US Federal Trade Commission.