Signal Messenger App

Signal is a messaging application known for its end-to-end encryption, ensuring secure communication. It was founded by Moxie Marlinspike and Brian Acton in 2018, operating under the Signal Foundation, a non-profit organization based in the USA. The foundation is funded by donations, including a notable $50 million contribution from Brian Acton, co-founder of WhatsApp. (techcrunch.com)