Communication › Instant Messaging & VoIP

Free

Schedule or join meetings with crystal clear audio and HD video quality.

Mac OS X native (Cocoa) H.323 and SIP compliant video conferencing and VoIP client.

Free

Keep your information up to date wherever you are.

Free

Next evolutionary step of Voice over IP (VoIP) group...

Free

IRC client for OS X written on RubyCocoa.

Free

Fast, free and easy way to make a video call.

Free

With myPhoneDesktop, you can send content quickly from your desktop to your iPhone.

Free

Easy-to-use tool for voice communication.

Allows you to dial your friends directly from your Mac.

Fritz!Box call monitor and call manager for Mac OS X.

Tether is an application that allows you to have full Internet access on laptop.

Free

Make video conferences with your clients and co-workers

Free

First Google Voice client for the Mac.

Lightweight IRC client created specifically for Mac OS X.

Keep an eye on your spending, so you don't run out of credit.

Jitsi (previously SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP...

Free

Collaborate more securely and effectively from anywhere with colleagues.

Free

Mysms - Send and receive text messages on your computer from any browser.

MorphVOX Junior Mac is free voice changer software.

Perform various actions on your WhatsApp account from your MacOS.

Dialogue uses bluetooth to connect your Mac with your phone.

Free

Message your friends, share files, and call other users directly from your Mac.

Free

The official app for Telegram cloud-based messaging service.

Free

FREE UNLIMITED PICTURE AND TEXT MESSAGING!