Skype

Small program mainly aimed to provide a simple user interface for making VoIP calls with Asterisk PBX (an open source VoIP PBX).

Messenger:mac (or Microsoft Messenger for Mac) is Microsofts version of the popular Windows Live Messenger for the Mac platform.

Allegedly "cheap" phone calls with Jumblo. WARNING: expect to have payments disappear with zero recourse and have "free" minutes widely unavailable like any other betamax clone scam.

Pinger lets you text and talk free with the people you care about most, anywhere on the planet. Tap a picture and you'll see all of your communications—texts, pics, calls, …

Zoom — программа для организации видеоконференций, разработанная компанией Zoom Video Communications. Она предоставляет сервис видеотелефонии, который позволяет подключать одновременно до 100 устройств бесплатно, с 40-минутным ограничением для бесплатных аккаунтов.

Discord — проприетарный бесплатный мессенджер с поддержкой VoIP, видеоконференций, предназначенный для использования различными сообществами по интересам, наиболее популярен у геймеров и учащихся. Разработчик — компания Hammer & Chisel из Сан-Франциско.

VoxOx is the first ever Universal Communicator Service that manages all forms of cross-media communication for consumers. Signup *requires* user provide SMS capable mobile number. It is the only service …

MXit is a free, cheap to use, instant messenger for almost every phone on the earth. From chatrooms, games and shopping to movie clips, music and sport - this is …

Mobile communication goes social Indoona is the first app to communicate and share your posts with the contacts in your phonebook Communicate with indoona With indoona you can call, video-call …

Portuguese messenger publish by SAPO. It has a sending SMS feature and the user can make audio-visual calls. GTalk can be integrated with this instant messaging program.

Paltalk is an instant messaging service that enables users to communicate via internet chat, voice and video chat. It offers chat rooms and the ability for users to create their …

With FriendCaller Web Phone, you can make free VoIP calls and cheap phone calls. Use it from a browser, a iPhone, iPod Touch, iPad, Android, Nokia SIP Phone. Talk to …

Zoom is a free cloud HD meeting service. You can start or join a HD video meeting with crystal-clear, face-to-face conversation and high quality screen sharing- anytime, from anywhere, to …

Vidyo is Videoconferencing software and service for both desktop and mobile.

Zaplee is a global cloud-based PBX phone system. Our system works with Skype, Google Voice, SIP, VOIP, landline and mobile phones. We can provide phone numbers in over 60 countries …

Pling Messenger is a push-to-talk voice messenger that helps people communicate quickly and naturally. Send messages to individuals or groups with the brevity of a text message and the personality …

Spreed is the worldwide Unified Web Conferencing service offering integrated web- and telephone conferencing. It is based on Flash player. Free service includes 3 attendees and max 1.5h meetings. Single …

Whistle Phone is an app for calling or texting your family and friends for free over Wifi or your mobile data plan. On your own customized phone number, you can …

Make cheap international calls from your mobile, landline or computer from as little as 0.4p per minute. Our call rates are up to 88% cheaper than the competition. Top up …