Communication › Instant Messaging & VoIP

FREE

Send instant messages, share files, and hold video conferences.

FREE

Do more than just IM with Yahoo!

FREE

Popular and, probably, the best instant messaging client for you Mac.

FREE

Send messages, have group chats, and share pictures using the Whatsapp services.

FREE

A chat-based workspace in Office 365 with private group conversations.

FREE

Video chat/calling tool; see up to 6 friends at once.

FREE

VoIP program which allows you to make phone calls over the internet.

FREE

Send messages, make video calls and stay connected with your friends.

FREE

Send messages, exchange files, and make voice and video calls.

FREE

A desktop messenger that allows using the services of Telegram.

FREE

Free-to-use voice and text chat application for gamers.

FREE

Powerful and efficient instant messaging client.

iGlasses allows you to adjust and manipulate your webcam's video settings.

FREE

QQ connects you to over 600 million Chinese QQ members and many of your favorite websites and useful tools.

FREE

Google, Skype, Yahoo, MSN, AIM, Jabber, Facebook, SMS, Fax...

FREE

Supports private and group communication as well as file exchanges.

FREE

Integrated functionality for instant messaging, presence, conferencing and voice.

FREE

Communicate with all of your friends personally and in group chats on your Mac just as you would with your mobile device.

FREE

Stay in touch with your colleagues and monitor conversations.

FREE

Freeware Mac OS X IRC client created by Steve Green.

FREE

Spark is an open source, cross-platform instant messaging client for businesses.

FREE

Traditionally, chat clients on the Mac have been anything but glamorous.

FREE

Chat application that tries to integrate most of the major chat networks into one application.

FREE

Seek out friends and colleagues on the Internet with the latest version of this megapopular chat pro