Alternatives to CSipSimple for all platforms with any license

  • Hangouts icon

    Hangouts

    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

  • Signal icon

    Signal

    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

    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

    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

  • Ring icon

    Ring

    Ring is a secure and distributed voice, video and chat communication platform that requires no centralized server and leaves the power...

    Open Source Mac Windows Linux Android

  • Nimbuzz icon

    Nimbuzz

    Nimbuzz offers limited availablility free calls and limited availability free text messaging for users via 3G and WiFi. Calls to other...

    Freemium Mac Windows Web / Cloud Android iPhone Java Mobile ... S60 HP webOS Blackberry Android Tablet Windows Phone iPad Chrome Kindle Fire

  • Ekiga icon

    Ekiga

    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

  • YakYak icon

    YakYak

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

    Open Source Mac Windows Linux

  • 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...

    Open Source Windows

  • Zoiper icon

    Zoiper

    Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Windows Phone

  • Fring icon

    Fring Discontinued

    Fring is a VoIP (voice over internet) app that allows you to make 2-way video calls, voice calls and live chat for free, from your...

    Freemium Android iPhone

  • SeaFour.club icon

    SeaFour.club

    SeaFour.club 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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  • Talkatone icon

    Talkatone

    Talkatone gives you free calls, text messages, real-time location sharing and picture sharing to Facebook and Google friends, or any...

    Freemium Android iPhone Android Tablet 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...

    Commercial Android iPhone Android Tablet iPad

  • Lumicall icon

    Lumicall

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

    Open Source Android

  • shMessenger icon

    shMessenger Discontinued

    ShMessenger Mobile is a free instant messaging client for mobile phones, which supports YMSG (Yahoo!), MSN and GTalk protocols. In...

    Free Java Mobile

  • 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

  • Sipdroid icon

    Sipdroid

    Free and open-source SIP/VoIP Client.

    Open Source Android

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  • CallProtector icon

    CallProtector

    Encrypted secure Calls with CallProtector! App available on iOS & Android With CallProtector you can call others in a secure...

    Free Android iPhone

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