Zello for Mac

Skype keeps the world talking. Say “hello” with an instant message, voice or video call – all for free*, no matter what device they use Skype on. Skype is available on phones, tablets, PCs, and Macs.

Do more than just IM with Yahoo! Messenger 10
1. Instant message with one friend, or conference in a bunch
2. All-new Insider with Yahoo! Mail, news, weather, search and more
3.

ooVoo is changing the way people communicate and connect online with its high-quality video and audio and multi-user capabilities that allow up to six people to talk face-to-face with each other at the same time.

Palringo is the best way to stay connected, socialize and share texts, pics, and walkie-talkie messages with your existing friends or with new friends who are into the same stuff.

Nowadays, when social interactions happen more and more often in the online environment, it's important to use an app that integrates a wide variety of functions and protects the user's privacy.

Ventrilo is the next evolutionary step of Voice over IP (VoIP) group communications software. Ventrilo is also the industry standard by which all others measure themselves as they attempt to imitate its features.

Mumble is a powerful application which was designed to ease the communication among gamers. When playing online games, gamers need good communication in order to take split-second actions, and most of the games don't provide a built-in voice tool.