Signal Protocol is described as 'The Signal Protocol (formerly known as the TextSecure Protocol) is a non-federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations' and is an app in the security & privacy category. There are four alternatives to Signal Protocol for a variety of platforms, including Android, Self-Hosted, iPhone, Mac and Windows apps. The best Signal Protocol alternative is Matrix, which is both free and Open Source. Other great apps like Signal Protocol are XMPP, Keychat and Session Initiation Protocol.
Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control.
XMPP, or Extensible Messaging and Presence Protocol, is an open standard for instant messaging and real-time communication, allowing for message exchanges between any two entities on the Internet. It's known for its decentralized and extensible nature.
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications.
United Kingdom
United States
