Alternatives to Asterisk for all platforms with any license




Web / Online

Indie / Classic

Other Platforms

  • FreeSWITCH icon


    FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication...

    Open Source Mac Windows Linux BSD

  • 3CX Phone System 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...

    Freemium Windows Android iPhone

  • freepbx icon


    The FreePBX EcoSystem has developed over the past decade to be the most widely deployed Open Source PBX platform in use across the...

    Free Linux

  • FusionPBX icon


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

    Open Source Linux BSD

  • Zent.IO icon


    Zent.IO is a Contact Center Cloud Software Multichannel that unify chat, phone and e-mail. All the communication channels will be...

    Commercial Web / Cloud

  • kamailio icon


    Kamailio® (successor of former OpenSER and SER) is an Open Source SIP Server released under GPL, able to handle thousands of call...

    Open Source Linux

  • XiVO icon


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

    Open Source Mac Windows Linux

  • Voxibot the Voximal suite icon

    Voxibot the Voximal suite

    The voice phone bot suite based on Asterisk and FreePBX propulsed by the Voximal VoiceXML interpreter.

    Freemium Linux Web / Cloud Self-Hosted Raspbian Raspberry Pi

  • sipXecs

    A SIP based implementation of a PBX / unified communications system.

    Open Source Linux

  • Flexisip icon


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

    Open Source Linux

  • 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...

    Open Source Linux

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  • opensips icon


    OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server. OpenSIPS is more than a SIP proxy/router as it...

    Open Source Linux

  • VoipSwitch icon


    VoipSwitch is a SoftSwitch System with routing and billing, with SIP protocol support (in older versions also H323). Basic package...

    Commercial Windows

  • Ozeki Phone Systems

    Ozeki Phone System XE is a Software PBX telephony platform for Windows. Ozeki enables your applications to connect PBX and access IVR...

    Commercial Windows

  • Genesys Voice Platform icon

    Genesys Voice Platform

    Genesys Voice Platform (GVP) is an advanced software-only solution that unifies web and VoIP telephony networks to enable new and...

    Commercial Web / Cloud Self-Hosted

  • Mizutech VoIP Server icon

    Mizutech VoIP Server

    A robust SIP/H.323/WebRTC softswitch for Windows with a long list of features including PBX and billing.

    Free Windows

  • MiRTA PBX icon


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

    Commercial Linux

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  • Avaya Voice Portal icon

    Avaya Voice Portal

    Voice Portal delivers on industry leading IT fit, reliability, scalability and manageability. Voice Portal meets today"s demand...

    Commercial Linux

Asterisk Comments

Amazingly flexible

Positive Comment by Line5
about Asterisk May 2013

Connect it to CRM systems. Hardware available for all types of phone lines all over the world. Open source. Use softphones, sip-phones, analog phones, isdn phones, fax, ... Create callthrough and callback solutions, or distributed work environments. Combine telephony and internet. This software is one of the greatest solutions in the world of voice communication - especially when thinking about innovation and creative solutions. Strongly recommended!