Nearly everything. Installing, connecting, chatting, ...
I personally use Astra, Facebook, Google Talk, IRC and MSN and all work fine. Not sure about Skype support.
What does not
Menus work but have the very annoying bug that if a tooltip pops up, the menu gets collapsed. Can be irritating if using the Trillian menu.
Using the Settings > Devices panel, Trillian crashes.
What was not tested
I have not tested Skype. Not all features have been tested; I've rated it platinum as per the features I use. Results might differ.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Current||Ubuntu 14.04 "Trusty" amd64 (+ variants like Kubuntu)||Apr 02 2014||1.7.15||Yes||Yes||Bronze||NanoSector|