Alternatives to CallProtector for all platforms with any license

  • Hangouts icon


    Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one...

    Free Windows Web / Cloud Android iPhone Chrome OS Android Tablet ... iPad Chrome Android Wear

  • Viber icon


    Viber is a mobile application that lets you make free phone calls and send text messages to anyone who also has the application...

    Freemium Mac Windows Linux Android iPhone Windows RT ... Android Tablet Windows Phone iPad Blackberry 10 Apple Watch

  • Signal icon


    TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees...

    Open Source Mac Windows Linux Android iPhone Chrome

  • Jitsi icon


    Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols...

    Open Source Mac Windows Linux Web / Cloud Android BSD

  • Linphone icon


    Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the internet...

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

  • Empathy icon


    Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell...

    Open Source Linux BSD

  • Wire icon


    Wire is a secure, private and open source messenger for phones, tablets and desktop. Crystal clear voice and video calls, private...

    Open Source Mac Windows Linux Web / Cloud Android iPhone ... Chrome OS Android Tablet iPad Microsoft Edge Chrome Opera Firefox

  • Ekiga icon


    Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323...

    Open Source Windows Linux

  • CSipSimple icon


    csipsimple will allow native sip for android device. It relies on the pjsip SIP stack and use the pjsip-jni project. The use of...

    Open Source Android

  • YakYak icon


    What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete...

    Open Source Mac Windows Linux

  • Telephone icon


    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...

    Open Source Mac

  • MicroSIP icon


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

    Open Source Windows

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  • Coccinella icon


    Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration...

    Open Source Mac Windows Linux BSD

  • X-Lite icon


    Combining voice calls, video calls and Instant Messaging in a simple interface, CounterPath's X-Lite helps you seamlessly...

    Commercial Mac Windows

  • QuteCom icon

    QuteCom Discontinued

    QuteCom is a community of enthusiasts and developers, creating free software products related to communication over IP. The flagship...

    Open Source Mac Windows Linux

  • Speek icon


    At Speek we’re dedicated to bringing you super simple conference calling with no dial-ins, pins or downloads. Participants click the...

    Freemium Web / Cloud Android iPhone Windows Phone

  • icon is a socket webchat supporting aesthetic username customization and stylized messages using a markup language similar to...

    Open Source Linux Web / Cloud

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  • Lumicall icon


    Free calls using open technology on Android. A heavily enhanced derivative of SIPdroid, adding support for ZRTP, SRTP, ENUM, ICE/TURN

    Open Source Android

  • Bravis icon


    Bravis is a commercial enterprise video conferencing software for collaborating with business associates, co-workers and customers...

    Commercial Windows

  • 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...

    Commercial Android iPhone Android Tablet iPad

  • Siphon SIP icon

    Siphon SIP

    Home of the World's first free SIP/VoIP application for iPhone and iPod Touch 1 and 2. Siphon SIP/VoIP project is the first in...

    Open Source iPhone

  • Twinkle softphone icon

    Twinkle softphone Discontinued

    Twinkle is a soft phone for your voice over IP communcations using the SIP protocol. You can use it for direct IP phone to IP phone...

    Open Source Linux

  • Phoner Second Phone Number icon

    Phoner Second Phone Number

    Phoner provides business owner, sales people, lawyers, doctors, police officers and others with a second phone number to protect their...

    Free iPhone iPad

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