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Kamailio is a comprehensive and robust Session Initiation Protocol (SIP) server. It acts as a one-stop destination for various SIP functionalities including being a registrar, proxy, router, and much more. Suitable for both small to large voice over IP and real-time communication infrastructures, this software offers enhanced scalability to handle increased call loads with ease.

Kamailio SIP Server
Welcome To Kamailio - The Open Source SIP Server Kamailio® (successor of former OpenSER and SER) is an Open Source SIP Server released under GPLv2+, able to handle thousands of call setups per second. Kamailio can be used to build large platforms for VoIP and realtime communications - presence, WebR…


One of the prime features of Kamailio is its modular architecture that allows for flexible customization to meet specific needs. With its numerous modules facilitating various functionalities, users can just enable the ones they need and construct their own unique solution. This makes it highly adaptable to diverse operational terrains.

Aside from its versatility, Kamailio boasts high-performance standards that ensure seamless operations even in high-load circumstances. Its capability to manage thousands of calls per second makes it ideal for businesses looking to enhance their telecommunication efficiency. Moreover, the open-source nature of Kamailio encourages continuous development and improvement by an active community of developers.

With 1930 GitHub stars and the latest commit on 2023-07-27 the project looks healthy.