Looking for a Mac OS X instant messenger client for AIM, ICQ, Yahoo, IRC, MSN and Jabber? Then check out Fire.app (as in Fast Internet Response Exchange/Engine) from Epicware, which puts a single surface on theses services.
Fire.app is a multiplatform instant messenger client based off of freely available libraries for each of these services. Presently, it can also tackle ICQ communication, and Yahoo! Pager communication. With the app, you can set up a buddy list to see who’s online, save a password and user name, and connect and disconnect from any service using a Services dialog.
Fire.app is freeware and can be downloaded (a 1.0 M file) from the EpicWare Web site (Fast Internet Response Exchange/Engine). However, note that it’s for the final version of Mac OS X. it won’t work on the Mac OS X Public Beta. Also note that it’s open source and under continual development.