Zoiper!

* Windows http://www.zoiper.com/en/voip-softphone/download/zoiper3#windows
* Mac http://www.zoiper.com/en/voip-softphone/download/zoiper3#mac
* Linux http://www.zoiper.com/en/voip-softphone/download/zoiper3#linux
* Android http://www.zoiper.com/en/voip-softphone/download/zoiper3#android
* iPhone http://www.zoiper.com/en/voip-softphone/download/zoiper3#iphone
* WEB http://www.zoiper.com/en/voip-softphone/download/zoiper3#webphone
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Zoiper alternatives

  • Jitsi

  • Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.It can handle every firewall, and has many other useful features.

    tags: aim-clients audio-conferencing chat-clients desktop-sharing end-to-end-encryption
    platform: Mac OS X Windows Linux Online Android BSD
  • Wire

  • Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group chats, file sharing, audio and video messages - everything is end-to-end encrypted. Wire works on Android, iOS, Windows, MacOS, Linux and any modern web browser.

    tags: encrypted-calls encrypted-chat encrypted-file-sharing end-to-end-encryption file-encryption
    platform: Mac OS X Windows Linux Online Android iPhone Android Tablet iPad
  • Ring

  • Ring gives you a full control over your communications and an unmatched level of privacy.

    tags: decentralized distributed end-to-end-encryption messaging video-calling
    platform: Mac OS X Windows Linux Android
  • appear.in

  • See up to 8 friends on live video while chatting with them! Create your own room (appear.in/your-room) and send the link on chat, Facebook Messenger, SMS or email to invite people. No registration required, once people click the link, they'll appear with you!

    tags: anonymity anonymizing-network anonymous-chat anonymous-email anonymous-mail
    platform: Windows Online Android iPhone Chrome OS Android Tablet iPad
  • Ekiga

  • Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting.

    tags: Portable instant-messaging sip telephone video-calling
    platform: Windows Linux PortableApps.com
  • Zulip

  • Zulip is a group chat app.

    tags: chat-servers github-integration group-chat group-collaboration integrated-file-sharing
    platform: Mac OS X Windows Linux Online Android iPhone BSD Self-Hosted
  • CSipSimple

  • csipsimple will allow native sip for android device.

    tags: voice-chat sip sms-messaging phone-calls zrtp
    platform: Android
  • Nimbuzz

  • Nimbuzz offers limited availablility free calls and limited availability free text messaging for users via 3G and WiFi. Calls to other Nimbuzz users are free. PAY to call mobile or landline phones for as little as $0.02/minute in bulk with NimbuzzOut. Free SIP to SIP calls.

    tags: free-calls free-text instant-messaging voice-call voice-chat
    platform: Mac OS X Windows Online Android iPhone Java Mobile Symbian S60 HP webOS Blackberry Android Tablet Windows Phone iPad Google Chrome Kindle Fire
  • YakYak

  • What does it do:

    tags: Portable google-talk instant-messaging
    platform: Mac OS X Windows Linux Hangouts
  • X-Lite

  • Combining voice calls, video calls and Instant Messaging in a simple interface, CounterPath's X-Lite helps you seamlessly transition from a traditional phone environment into the world of Voice over IP.

    tags: instant-messaging sip sip-client video-calling voice-call
    platform: Mac OS X Windows
  • Dasher Messenger

  • Dasher lets you do more than just text message. It's messaging with benefits:

    tags: animated-gif group-chat instant-messaging send-money share-links
    platform: Online Android iPhone
  • Blink

  • Blink, a state of the art, easy to use SIP client. You can use it with any SIP provider or its own fully-featured SIP service.

    tags: audio-chat contacts-management desktop-sharing end-to-end-encryption icloud-sync
    platform: Mac OS X Windows Linux
  • SeaFour.club

  • SeaFour is the SeaFour.club community's chat engine, powered by Node.js and Socket.io.It's a socket webchat supporting aesthetic username customization and stylized messages using a markup language similar to 'LISP', and supports a multitude of alternative clients. It uses a free-as-in-freedom license that enables users to modify the software to best fit their needs.

    tags: ad-free free-sms group-chat group-sms instant-messaging
    platform: Linux Online BSD
  • Sesame Chat

  • Sesame is a messaging app that gives you a self-aware digital assistant to protect messages on your behalf: your own Personal Cognitive Messengerâ„¢.

    tags: sms-messaging smartphone-messaging personal-database personal-messaging
    platform: iPhone iPad
  • Voxox CloudPhone

  • Cloud Phone is a virtual pbx that enables small businesses to quickly, easily, and affordably set up a business phone solution without having to purchase hardware

    tags: voice-chat communications voicemail unified-communications virtual-pbx
    platform: Online Android iPhone