Alternatives to FreeSWITCH for all platforms with any license

  • Asterisk

    Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD.

    Free Open Source Mac Windows Linux

    Low level SIP Voice chat Add a feature

    Asterisk icon

  • FreePBX

    FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server.

    Free Open Source Linux

    SIP Voice Call Add a feature

    FreePBX icon

  • 3CX Phone System

    3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box.

    Freemium $ $ $ Mac Windows Linux Web Android ... iPhone Microsoft Exchange Server Chrome Microsoft Office Suite Firefox

    SIP Voice chat Add a feature

    3CX Phone System icon

  • Kamailio

    Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under GPL, able to handle thousands of call setups per second. Among features:...

    Free Open Source Linux

    SIP Add a feature

    Kamailio icon

  • XiVO

    XiVO is an IP-PBX, a unified communications platform that connects phones on a local or private network with other networks such as public landlines and mobile...

    Free Open Source Mac Windows Linux

    Voice chat Add a feature

    XiVO icon

  • Elastix

    Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, faxing and collaboration functionality. It has a web interface...

    Freemium Linux

    Voice chat Add a feature

    Elastix icon

  • Yate - Yet Another Telephony Engine

    Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, SIP, IAX1, IAX2, RTP. For the plain old...

    • Requires "a lot of" appliances to work, you must spend a lot of money to do this. With FreeSwitch you need a PC, OpenVox Card and ready. Guest • Aug 2015 Disagree   Agree

    Free Open Source Linux

    SIP Voice chat Add a feature

    Yate - Yet Another Telephony Engine icon

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  • AsteriskNOW

    AsteriskNOW is the fastest way to get started building custom telephony solutions with Asterisk. Simply download the .iso file, burn it to a CD, drop it into the CD or...

    Free Linux

    Voice chat Add a feature

    AsteriskNOW icon

  • unxsVZ uSIPSwitch

    uSipSwitch a micro sip switch (sip proxy) perfect for edge SIP SBC work (e.g. hosted PBX business). Comes with web console and DNS health tools. Uses modern clustering...

    Free Open Source Linux

    SIP Add a feature

    unxsVZ uSIPSwitch icon

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