Instant Messaging

Line icon
Just like Whatsapp but from your Mac's desktop
Messenger for Desktop icon
Unofficial desktop client for Facebook chat
Camfrog icon
A traditional chat with group videoconferencing
AIM icon
AOL's instant messaging program
Nimbuzz! icon
Chat with friends on this multiplatform messaging client
Messages icon
iOS's iMessage now also on Mac OS
Instantbird icon
An IM combo born of Mozilla and Pidgin
Adium icon
A Multiprotocol Instant Messenger client
Franz icon
A single program for all your IM accounts
Palringo icon
Multiplatform IM client
Yahoo Messenger icon
Chat with your Yahoo and MSN Messenger contacts
Microsoft Messenger icon
Talk to all of your MSN contact even with your Mac
Coccinella icon
Cooperative whiteboard and voice communication through Jabber
Chax icon
Add a bunch of improvements to iChat
aMSN icon
Open Source alternative to chat with MSN contacts
PSI icon
A simple Jabber-based IM client
Retroshare icon
Share files and chat with friends safely