Whatsapp Technical Stack & How to create app like Whatsapp - Technicalities of Whatsapp
Erlang - Programming language
FreeBSD - Advanced computer OS
Yaws - An Erlang based web server that can also run as a standalone web server
XMPP - XMPP is the backbone that makes it possible to send real-time messages, online presence indicators, XML routing features and much more.
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