Alternatives to Kamailio 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 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

    Voice Call Add a feature

    FreePBX icon

  • FreeSWITCH

    FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any...

    Free Open Source Mac Windows Linux BSD

    No features added Add a feature

    FreeSWITCH 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 Add a feature

    3CX Phone System icon

  • FusionPBX

    FusionPBX is an open source FreeSWITCH GUI. FusionPBX can be used as a high available single or domain based multi-tenant PBX, carrier grade switch, call center server...

    Free Open Source Linux BSD

    Gui Add a feature

    FusionPBX icon

  • Starfish PBX

    Starfish PBX aims to be an open source alternative to Digium’s Switchvox. The goal is to have a software equivalent to which we can add additional functionality like: ...

    Free Open Source Linux

    SIP Add a feature

  • 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

    No features added Add a feature

    Elastix 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

  • Flexisip

    SIP proxy server implementation compliant to RFC3261, written in C++11 started in 2011.

    Free Open Source Linux

    SIP Add a feature

    Flexisip icon

Platforms

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