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Free Asterisk Alternatives

The best free alternative to Asterisk is 3CX. If that doesn't suit you, our users have ranked more than 25 alternatives to Asterisk and 16 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Asterisk are FreeSWITCH, Wazo, FusionPBX and Kamailio.

Asterisk alternatives are mainly Text to Speech Services but may also be Phone Systems or Customer Support Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Asterisk.
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Asterisk iconAsterisk
  37
  • FreeOpen Source
  • Mac
  • Windows
  • Linux

Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like...

Learn more about Asterisk

  1. 3CX icon

    3CX

    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Microsoft Exchange Server
    • Raspberry Pi
    • Microsoft Office Suite

    The 3CX Phone System is the software-based private branch exchange (PBX) Phone system based on the SIP (Session Initiation Protocol) standard and enables extensions to make calls via the public switched telephone network (PSTN) or via Voice over Internet Protocol (VoIP) services...

    Screenshot
    3CX vs Asterisk opinions
    Almost everyone thinks 3CX is a great alternative to Asterisk.

    Easy to use, easy to install, feature rich

    Positive comment ago
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    7

    It's a soft phone, not a VoIP server / exchange

    Negative comment ago
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    -21
  2. FreeSWITCH icon

    FreeSWITCH

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD

    FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions.

    Screenshot


  3. Wazo icon

    Wazo

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Self-Hosted

    Wazo is mainly an IPBX that provides communication services such audio, video, and instant messaging based on the use of standard network technologies such as the TCP/IP protocol.

    Screenshot
  4. FusionPBX icon

    FusionPBX

    • FreeOpen Source
    • Linux
    • BSD

    FusionPBX is an open source FreeSWITCH GUI.

    No screenshots yet
  5. Kamailio icon

    Kamailio

    • FreeOpen Source
    • Linux

    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.

    No screenshots yet


  6. Yate - Yet Another Telephony Engine icon

    Yate - Yet Another Telephony Engine

    • FreeOpen Source
    • Linux

    Yate is a softswitch (concept of separating the network hardware from network software).

    No screenshots yet
    Yate - Yet Another Telephony Engine vs Asterisk opinions
    pros, cons and recent comments

    Carrier type services - not targeted as a PBX

    Negative comment ago
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    0
  7. XiVO icon

    XiVO

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    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 telephones.

    Screenshot
  8. sipXecs

    • FreeOpen Source
    • Linux

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

    No screenshots yet
  9. The Voximal stack icon

    The Voximal stack

    • FreemiumProprietary
    • Linux
    • Online
    • Self-Hosted
    • Amazon
    • Raspbian
    • Raspberry Pi
    • Microsoft Azure
    • Docker

    The voice phone platform based on Asterisk and FreePBX propulsed by Voximal VoiceXML interpreter.

    No screenshots yet
  10. sipXcom icon

    sipXcom

    • FreeOpen Source
    • Linux

    sipXcom provides complete enterprise-grade telephony, unified messaging, Instant messaging, audio conferencing, and many other features. sipXcom can be run along side your existing Cisco, Avaya, Mitel, Shortel or other PBX while you migrate users to the sipXcom system.

    No screenshots yet
Showing 10 of 16 alternatives