Alternatives to Siphon SIP for all platforms with any license

Platforms

Desktop

Web / Online

Browsers

Indie / Classic

Show 9 hidden platforms
  • Linphone icon

    Linphone

    Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the internet, with voice, video, and text instant messaging. Linphone makes use of the SIP protocol, an open...

    Open Source Mac Windows Linux Web / Cloud Windows Mobile Android ... iPhone Android Tablet Windows Phone iPad Xfce

  • Talkonaut icon

    Talkonaut

    Talkonaut is a free Jabber (XMPP) client for your iPhone or iPod with free peer-to-peer voice calling over Jingle Audio extension compatible with GoogleTalk™. Talkonaut can be used with any standard Jabber account like Gmail, Gizmo5™...

    Free Windows Android iPhone S60 iPad

  • Silent Phone icon

    Silent Phone

    Silent Phone – Secure Encrypted Video & Voice Mobile Phone Calls You now have the ability to have secure encrypted phone calls between Silent Circle members, anywhere, anytime, with complete control. Make a secure call as...

    Commercial Android iPhone Android Tablet iPad

  • CallProtector icon

    CallProtector

    Encrypted secure Calls with CallProtector! App available on iOS & Android With CallProtector you can call others in a secure way, you only need working Internet(EDGE / 3G / WIFI) While you are calling someone, the devices...

    Free Android iPhone

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