FreeSWITCH

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.

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signalwire /freeswitch

Star4.4k

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.

open-source iot sip webrtc telephony freeswitch voip source-code signalwire

UpdatedNov 3, 2025
C

fonoster /routr

Sponsor

Star1.6k

⚡ The future of programmable SIP servers.

docker kubernetes server twilio sip webrtc freeswitch opensips instant-messaging intercom asterisk voip ims freepbx kamailio fusionpbx scaip fonoster

UpdatedOct 28, 2025
TypeScript

caoliang1918 /contact-center

Star607

智能电话外呼系统呼叫中心系统 freeswitch webrtc

sip webrtc esl freeswitch pstn

UpdatedMar 10, 2025
Java

hnimminh /libresbc

Sponsor

Star438

An open source Session Border Controller 🌟 The SBC you dream about 🗽 LibreSBC will help you save thousands of dollars.

tls opensource sip nat telephony freeswitch opensips asterisk sbc srtp sip-server freepbx kamailio fusionpbx twillio msteams session-border-controller topology-hiding b2bua

UpdatedSep 14, 2025
Python

wangkaisine /mrcp-plugin-with-freeswitch

Star346

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。

tts freeswitch asr xfyun unimrcp

UpdatedDec 27, 2018

anyRTC-UseCase /SipRtcProxy

Star341

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。

sip webrtc gateway freeswitch ivr voip pstn aliyun kamailio callcenter agora wangyiyun tecent webrtc2sip anyrtc arcall sip2webrtc

UpdatedOct 11, 2023
C++

Infactum /tg2sip

Star307

Telegram <-> SIP voice gateway

telegram sip freeswitch asterisk pjsip

UpdatedSep 3, 2024
C++

esl-client /esl-client

Star241

A Fork fromhttp://git.freeswitch.org/git/freeswitch-contrib/tree/dvarnes/java/esl-client

java netty esl telephony freeswitch voip event-socket esl-client freeswitch-event-socket

UpdatedApr 29, 2022
Java

sipcapture /homer-app

Star222

HOMER 7.x Front-End and API Server

elasticsearch monitoring influxdb metrics sip logs prometheus freeswitch opensips asterisk voip loki rtc rtp homer rtcp kamailio sipcapture rtcpxr heplify

UpdatedNov 5, 2025
Go

zhouhailin /freeswitch-externals

Star204

FreeSWITCH externals projects

java spring-boot esl freeswitch voip event-socket esl-client freeswitch-event-socket freeswitch-esl

UpdatedApr 30, 2025
Java

friends-of-freeswitch /switchio

Star202

asyncio powered FreeSWITCH cluster control

aio coroutines esl telephony freeswitch asyncio voip auto-dialer dialer stress-tester

UpdatedJun 24, 2024
Python

ictinnovations /ictfax

Star197

Open Source Fax Server Software supporting inbound and outbound faxing. ICTFAX can be used in following faxing scenarios Web to fax, Fax to Web or Online Fax Email to fax and fax to email ATA / Extensions to send and receive faxes via Fax machine using internet REST based Fax API’s to integrate with third party applications and automate business…

freeswitch fax-api fax-to-email t38 foip email-to-fax fax-server fax-software fax-origination opensource-fax fax-server-software freeswitch-fax

UpdatedAug 26, 2025
TypeScript

gmaruzz /saraphone

Star182

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.