Whistle Phone Alternatives

Text-messaging and instant-messaging chat service, you to with the video online application. Features:Freemium,Mac,Windows,Linux,Web,Android

JITs (formerly sip communicator) SIP, XMPP/Jabber, ICQ/aim, complete with endtoend encryption, protocols supported, such as audio /video and chat communication tool Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

Tel mobile phones, tablets, and Desktops secure and private a precursor. Crystal clear voice and video calls, private group chats, file sharing, voice and video messages Features:Free,Personal,Open,Source,Mac,Windows,Linux,Web,Android

What: Post//delete notifications stop talking (rename, add, contact) Chat messages Create/modify conversations, you get Features:Free,Open,Source,Mac,Windows,Linux,Hangouts

PJSIP stack-MicroSIP-free portable SIP based Windows soft. To make (P2P or normal mobile phones to make VoIP calls via open sip offers a high quality. Features:Free,Open,Source,Windows,

A program that allows you to make VoIP calls over the internet. Any appropriate sip provider traditional phones calls are used include Features:Free,Open,Source,Mac

VoIP TAPI soft and JET. In this application, audio connections, cellular network and VoIP line. The software can be used as my phone, and fixed Features:Free,Windows

Phone support for entrepreneurs and small businesses, setting up a system to Sivas is easy. Features:Freemium,Mac,Linux,Web,Android,Android,Tablet

Video meeting, video calls and instant messaging using your web browser, designed for the free and open-source-video-conferencing-solution. Pure is a web application based on WebRTC. Features:Free,Open,Source,Web,Chrome,OS,Self-Hosted

Secure, encrypted phone calls between Silent Circle members video-and audio-phones now have the ability to secure encrypted calls silent Features:Commercial,Android,iPhone,Android,Tablet,iPad

1 Click team talk meetings, including audio -, video-calling, screen-sharing, audio recording, notes, whiteboard, calendar, text chat, file sharing, meeting and Features:Free,Web,Chrome

Zoro.Instant Messaging and unified communications, collaboration, telephony, messaging, and digital-wallet platform from zoro 100%. Sav-CHAT-app 2 varieties are available Features:Free,Personal,Android,iPhone,Android,Tablet,iPad

The figures are designed for teams, where you need it, to get simple and smart, the phone system immediately. In 40 Countries. Phone calls between the Cascade team Features:Commercial,Mac,Windows,Linux,Web

Csepel is the easiest way to search for free from your computer. To change the caller ID, and allows you to make calls in the United States 100 free and unlimited Features:Free,Web,Chrome,OS,Firefox

You talk to the cloud, they offer excellent customer support for their customers. Very rarely calls for the use of a couple of agents busy, whether you are the talk of the cloud Features:Commercial,Web