Trillian - Trillian is a decentralized and federated instant messaging platform that lets your whole company send private and group messages, keep tabs on what co-workers are doing, share files, and much more.
Flow - Stop managing projects from your inbox.
LimeChat - LimeChat is an IRC client for Windows, Mac OS X and iOS. Features
PAUSE - Regain focus using ancient principles of Tai Chi mindfulness.
Adium - Adium is a free instant messaging application for Mac OS X that can connect to AIM, MSN, Jabber, Yahoo, and more.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.