Trillian and Gaim... (2000 and 1999)

Now Gajim still exists and is maintained. :P

Gajim is unrelated to Gaim. Gaim was renamed to Pidgin though, which still exists.

Oh, yeah I knew Gaim became Pidgin, but I thought Gajim is a fork of Gaim as well, Gaim revived. Oops.

	▲	a96 4 days ago \| parent [-]
		Being in any way associated with AIM/AOL was a bad thing, which they probably realized way too late.