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...

We estimate that by 2025, Signal will require approximately $50 million dollars a year to operate—and this is very lean compared to other popular messaging apps that don’t respect your privacy.

  • kpw
    3•1 year ago

    WhatsApp started is an XMPP client, but they use lots of proprietary extensions (doesn’t matter since they don’t federate). You can build very robust and scalable messengers with it if you want to.

    The open source implementations are developed by like 1-2 guys in their spare time and they’re not far behind (and sometimes even ahead) other federated messengers which received tens of millions in venture capital funding.