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FreeSWITCH is an adaptable open-source telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. Scalable and cross-platform, it provides an efficient solution for developers or businesses seeking to create custom communication systems or adapt existing ones.

FreeSWITCH is a Software-Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any…


In the realm of key features, FreeSWITCH stands apart with its extraordinary flexibility. The software supports various communication technologies including voice over internet protocol (VoIP), public switched telephone network (PSTN), and instant messaging (IM). Users can leverage this versatility to create a broad range of communication applications from softphones, PBX systems to sophisticated video conferencing applications.

Another defining feature is its scalability and cross-platform compatibility. It can handle anything from small individual applications to large enterprise solutions with ease. As it is compatible with multiple platforms like Windows, MacOS, Linux etc., it gains much appreciation in terms of accessibility. So whether you are a startup aiming at manageable telephony solutions or a multinational company seeking robust enterprise-level communication systems, FreeSWITCH may be the versatile solution you are looking for.

With 2469 GitHub stars and the latest commit on 2023-07-31 the project looks healthy.