Trillian is an interesting
development in communication software. An all-in-one messaging hybrid
software, Trillian lets you "do it all" from one single interface. From
Trillian you can access all the big instant messaging networks: AIM, Yahoo!,
MSN, and ICQ, as well as connect to an IRC chat server.
Trillian comes in
two versions. There is the completely free Trillian 0.74 - anyone can
download and use it to connect to the four IM networks as well as an IRC
server. Trillian Pro has all the same instant messaging and chat functionality
as 0.74, but it also allows you to send SMS messages install and use Trillian
plugins (small applications that add program features), and even work
as a personal address book and agenda (as well as much more). Naturally,
the Pro version of Trillian is commercial (you have to pay for it), and
it can be paid for and downloaded online.