Miranda is a TOTALLY FREE client, supports more protocols, has a ton of similarly FREE plugins (more powerful and useful than trillian's), is updated regularly, uses less ram, runs faster, and has less problems. Repeat: Miranda is waaaay better than trillian and a zillion times better than trillian pro 2.0 .... and it's free
Miranda is a TOTALLY FREE client, supports more protocols, has a ton of similarly FREE plugins (more powerful and useful than trillian's), is updated regularly, uses less ram, runs faster, and has less problems. Repeat: Miranda is waaaay better than trillian and a zillion times better than trillian pro 2.0 .... and it's free
http://miranda-im.org
for the linux fans in the audience is the similarly-better-than-trillian
http://gaim.sourceforge.net/
it's free also