Who founded Signal?

Answer

About Signal

Signal was founded by Moxie Marlinspike.

Signal was founded by Moxie Marlinspike. It launched in 2018. The product is in the Other category on Startup Spotlight.

Source

This answer is drawn from the Signal listing on Startup Spotlight, last updated May 20, 2026. For the full profile, see the Signal listing.

Other questions about Signal

• What is Signal?

  Signal is speak freely.

• When was Signal launched?

  Signal launched in 2018.