Software Alternatives, Accelerators & Startups

Whistle Phone

Whistle Phone is an app for calling or texting your family and friends for free over Wifi or your...

Whistle Phone

Whistle Phone Alternatives & Competitors

The best Whistle Phone alternatives based on verified products, community votes, reviews and other factors.
Latest update:

  1. Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

    Key Skype features:

    Cross-platform availability Integration with Microsoft services Free video and voice calls Screen sharing

    /skype-alternatives
  2. Private & Secure Messenger.

    Key Wire features:

    End-to-End Encryption Cross-Platform Support Open Source Rich Media Support

    Open Source

    /wire-alternatives
  3. VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

    Key VoIPstudio features:

    Call Recording Call Forward Call Analytics and Reporting Call Conferencing

    Try for free paid Free Trial $4.99 / Monthly (User)

    Try for free
  4. MicroSIP is a free portable SIP softphone for Windows based on PJSIP stack.

    Key MicroSIP features:

    Lightweight Open Source High-Quality Audio Portable

    /microsip-alternatives
  5. Desktop client for Google Hangouts.

    Key YakYak features:

    Open Source Cross-Platform Google Hangouts Support User Interface

    /yakyak-alternatives
  6. Telephone is a VoIP program which allows you to make phone calls over the internet.

    Key Telephone features:

    Ease of Use Integration Sound Quality Lightweight

    /telephone-alternatives
  7. Silent Circle is a secure communications firm offering enterprise communications solutions including software, devices, and services.

    Key Silent Phone features:

    End-to-End Encryption Cross-Platform Compatibility No Metadata Storage Secure File Transfers

    /silent-phone-alternatives
  8. Softphone for VoIP, CAPI und TAPI.

    Key Phoner features:

    Comprehensive Features Free Software Windows Compatibility Variety of Telephony Protocols

    /phoner-alternatives
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