Alternatives to opensips 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 OS X Windows Linux

    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

    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 OS X Windows Linux BSD

    No features added Add a feature

    FreeSWITCH icon
  • 3CX Phone System

    3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such as Google Nexus, Sony Xperia, Motorola Droid or Samsung Galaxy. Connect...

    Freemium Windows Android iPhone

    No features added 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

    No features added Add a feature

    Kamailio icon
    • From the old OpenSER/SER, Kamalio and OpenSIPS forked. Guest • Jun 2015 Disagree   Agree
  • 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

    No features added Add a feature

    unxsVZ uSIPSwitch 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...

    Free Open Source Linux

    No features added Add a feature

    Yate - Yet Another Telephony Engine 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

    No features added Add a feature

    Elastix icon
  • MiRTA PBX

    The most advanced interface for managing Asterisk PBX with Multitenant and Realtime capabilities.

    Commercial Linux

    No features added Add a feature

    MiRTA PBX icon

Platforms

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