A messenger app is any app that enables a private messaging function between two or more people. With more and more messenger apps popping up every day, this type of technology is quickly becoming the most popular way to send text-based messages, replacing SMS and MMS as the preference of most consumers.It is a highly performant and reliable library optimized to process a large volume of data with minimal delay. It follows the WebSocket protocol and provides better functionalities, such as fallback to HTTP long-polling or automatic reconnection, which enables us to build efficient chat and real-time applications.