The Best 30 3CX Phone System Alternatives

  • Asterisk icon

    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

  • YakYak icon

    YakYak

    What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * Toggle notifications on/off * Drag-drop, copy-paste or attach-button...

    Free Open Source Mac OS X Windows Linux Hangouts

  • MicroSIP icon

    MicroSIP

    MicroSIP is a free portable SIP softphone for Windows based on PJSIP stack. It allowing to do high quality VoIP calls (P2P or on regular telephones) via open SIP protocol.

    Free Open Source Windows

  • Telephone icon

    Telephone

    Telephone is a VoIP program which allows you to make phone calls over the internet. It can be used to call regular phones via any appropriate SIP provider, including Google Voice via Gizmo5.

    Free Open Source Mac OS X

  • Phoner icon

    Phoner

    Softphone for VoIP, CAPI und TAPI. This application enables voice connections to landline, cellular network and VoIP.

    Free Windows

  • FreeSWITCH 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 other form of media.

    Free Open Source Mac OS X Windows Linux BSD

  • Spreed icon

    Spreed

    Spreed is the worldwide unified web conferencing service offering integrated web and telephone conferencing. It is based on Flash Player. Free service includes 3...

    Commercial Mac OS X Windows Linux Web

  • Yate - Yet Another Telephony Engine 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 telephony systems (PSTN) it supports ISDN BRI and PRI.

    Free Open Source Linux

  • Wazo icon

    Wazo

    Wazo is a unified communications platform based on Asterisk and focused on extensibility.

    Free Open Source Mac OS X Windows Linux Self-Hosted

  • Paltalk icon

    Paltalk

    Paltalk is an instant messaging service that enables users to communicate via internet chat, voice and video chat. It offers chat rooms and the ability for users to...

    Freemium Mac OS X Windows Android iPhone Web

  • YateClient icon

    YateClient

    YateClient is an Instant Messenger and a SoftPhone.

    Free Mac OS X Windows Linux

  • Kamailio 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

  • Voip Stunt icon

    Voip Stunt

    VoipStunt is a free program that uses the latest technology to bring free and high-quality voice communications to people all over the world. When you use the free...

    Free Windows

  • VoipSwitch icon

    VoipSwitch

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

    Commercial Windows

    Call recording IVR
  • Starfish PBX 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

  • Chat Rooms icon

    Chat Rooms

    Free chat rooms no registration. Chat for free in many chat rooms. Meet single people and strangers online in retro style text online chat rooms.

    Free Web