Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...
It’s an absolutely surprising amount, because Matrix spends less than that if you just count the people working on the open source offerings.
And that project has significantly more features, is federated, and has a much larger scope.