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It's awesome that you want to help us remove incorrect alternatives. Feel free to report more applications below. But keep in mind that the only reason for an alternative not to be valid is if it doesn't share common functionality with Siphon SIP. It might not be a good choice according to you but it’s still an alternative. Read more about our thoughts about alternatives here.

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  27likes

  LIKE

  Linphone

  Open Source by Belledonne Communications |

  Mac, iPhone, Windows, Android, Linux, Blackberry

  Not an alternative?

  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...

    Social   voip, sip, softphone

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  7likes

  LIKE

  RedPhone

  Open Source by Whisper Systems |

  Android

  Not an alternative?

  Encrypted voice for Android. RedPhone provides end-to-end encryption for your calls, securing your conversations so that nobody can listen in. It's easy to use, and functions just like the normal dialer...

    Social   security, encryption, communication, encrypt

  +7 more voice-over-ip, telephone, telephony, voicemail, video-call, calling, encrypt-voice

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  5likes

  LIKE

  Talkonaut

  Free by GTalk2VoIP (Ruslan Zalata and Evgeny Kor... |

  iPhone, Windows Mobile, Android, Java (Mobile), Symbian S60

  Not an alternative?

  Talkonaut is free mobile calling, VoIP enabled, Google Talk like application for your mobile phone. Talkonaut is available for many different mobile platforms: Symbian S60, Windows Mobile 5/6, J2ME with...

    Social   voip, jabber, msn, yahoo, icq, aim, google-talk

  +1 more free-calls

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  0likes

  LIKE

  Silent Phone

  Commercial by Silent Circle, LLC |

  iPhone, iPad, Android + Tablet

  Not an alternative?

  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. ...

    Office & Productivity, Social   security, encryption, communication, encrypt, voip

  +6 more telephone, video-call, telephony, voicemail, calling, encrypt-voice

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Recent Forum Threads

Recent User Activities

• Zunami

  Oct 2012 Added Silent Phone as an alternative to Siphon SIP

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• Zunami

  Oct 2012 Added RedPhone as an alternative to Siphon SIP

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• OmgItsTheSmartGuy

  Jul 2011 Edited Siphon SIP

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• Nickshor

  Jul 2011 Added Siphon SIP

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• Nickshor

  Jul 2011 Liked Siphon SIP

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