FreeSWITCH is a multi-platform open source application server for real-time communication supporting many protocols and enables interoperability among them. It is widely deployed by telecommunications providers, contact centers as well as embedded into appliances.
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 device.
A PBX written by rust
Self-hosted API-first AI call center: AI talks, code controls the call. AI agents answer every call; humans take over without dropping it. Runs on FreeSWITCH with your SIP trunk and realtime model (OpenAI, Grok, Qwen, Doubao, or any compatible gateway).
An open source Session Border Controller 🌟 The SBC you dream about 🗽 LibreSBC will help you save thousands of dollars.
One binary. One YAML. A pure-Go SBC that keeps FreeSWITCH/Asterisk off the public internet—SIP proxy, RTP/SRTP relay, WebRTC gateway, and built-in SIP security.
使用FreeSWITCH接受用户手机呼叫，通过UniMRCP Server集成讯飞开放平台（xfyun）插件将用户语音进行语音识别（ASR），并根据自定义业务逻辑调用语音合成（TTS），构建简单的端到端语音呼叫中心。
网关服务：Sip与Rtc互通，实现Web，Android，iOS，小程序，SIP座机，PSTN电话，手机互通。
Open source fax server: web to fax, email to fax, fax to email, T.38 and G.711, ATA and fax machine support, and a REST API. Built on ICTCore and FreeSWITCH. Docker image available.
HOMER 7.x Front-End and API Server
FreeSWITCH module to stream audio to websocket and receive response
SIP Stack Rust library for building SIP applications
FreeSWITCH externals projects
asyncio powered FreeSWITCH cluster control
SaraPhone is an open source SIP WebRTC phone, complete with HotDesking, Redial, BLFs, MWI, DND, PhoneBook, Hold, Mute, Notifications. SaraPhone is fully integrated with FusionPBX. Based on SIP.js, SaraPhone works with all WebRTC compliant servers: FreeSWITCH, Asterisk, OpenSIPS, Kamailio, etc. SaraPhone gets its name from Giovanni's wife, Sara.
Open Source VoIP Billing Solution http://www.astppbilling.org | Report a bug https://inextrix.atlassian.net/jira/projects
Created by Anthony Minessale II
Released May 26, 2008
Latest release 3 months ago