About
Signal is a free, open-source encrypted messaging app run by a non-profit, with a focus on privacy and security.
Signal
OtherSpeak freely.
Listed May 19, 2026Updated Jun 9, 2026
Frequently asked
What is Signal?
Speak freely. Signal is a free, open-source encrypted messaging app run by a non-profit, with a focus on privacy and security.
What category is Signal in?
Signal is listed under Other on Startup Spotlight, a directory of indie and micro-startups.
Who founded Signal?
Signal was founded by Moxie Marlinspike.
When was Signal founded?
Signal was founded in 2018.
Where can I visit Signal?
You can visit Signal at signal.org, or view its full profile on Startup Spotlight.
Standalone answers: What is Signal? · Who founded Signal? · When was Signal launched?
Made by
M
Moxie Marlinspike · portfolio →
Founded 2018 · Team of 51-200
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