I was never a fan of GTK applications, at least not since I have switched to KDE (over 2 years now). But there are at least three GTK applications that I need on a day-to-day basis.
I consider this to be the best of all web browsers. The most important things that I love about it are:
- ability to display correctly almost any web page
- support for themes (I'm currently using Noia 2.0 Extreme - wonderful theme)
- support for extensions: StumbleUpon and DownloadHelper add-ons
- simple, clean, intuitive and customisable interface
- highly configurable
Firefox using the Noia Extreme theme
I've been loving IRC for many years now, and to be honest, the only client that fulfils my needs is XChat. Some of the highlights I really like about it:
- uses a low quantity of memory
- supports scripting languages like Perl, Python
- C plugin interface (I just love this one)
- highly configurable through /SET variables (like the conference mode, for example)
XChat - Connected to Freenode, #ubuntuforums channel
One disadvantage it has is bad icon integration in KDE's system tray (I think it has to do with the fact that the icon is not available as a standalone image, but is included in the XChat code - not very sure about it, though)
This is the port of DC++ for Windows, which is licensed under the GPL. When using it on hubs with 1000+ users, the interface becomes slow as hell, but I prefer it over Valknut anyway. It has all the features one needs in order to use Direct Connect for sharing files at full potential.