If you are interested in cross-platform compatibility with Mac iChat, then you might want to pass of this product. According to a message from their tech support today (April 9, 2006) "Trillian is having difficulties communicating with iChat at the moment."

We have spent several months trying to get the two products to talk with each other. Tech support didn't bother to tell us that they knew the products weren't working with one another. Only after we reached a frustration point, did we get this information. It came only after they told us to take our business elsewhere.

Strange way to work.