WhatsApp has been developed from the early days using open source software. WhatsApp engineers use, contribute to and release a lot of open source software.
We contribute to key projects
Our engineers are eager to contribute back to the open source community.
Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability.
FreeBSD is an advanced computer operating system used to power modern servers, desktops and embedded platforms.
LightOpenId is a PHP 5 library for easy openid authentication.
lighttpd is an open-source web server optimized for high performance environments while remaining standards-compliant, secure and flexible.
PHP is a popular general-purpose scripting language that is especially suited to web development.
yaws is a HTTP high perfomance 1.1 webserver particularly well suited for dynamic-content web applications.