I added new filter options so you can only view apps with specific toolkits. These new options are sub-entries to the overall Show Graphical Apps option. It must be checked for the others to matter. The available toolkit options are Gtk, Qt, Tk, wxW, and other. Ncurses already had a separate callout.
Hopefully this will help those KDE and Gnome users who prefer Qt and Gtk apps over alternatives.
Thanks to Oliver for the suggestion.
In December I posted a poll asking visitors to vote based on their desktop environment and graphical toolkit preferences. While there were many votes in each category, the most noteworthy is that nearly 60% of respondents care if either Gtk or Qt is being used. The data is interesting because it highlights some of the progress that still needs to be made so all Linux software can work equally well no matter what desktop environment is being used.
Does it matter to you if an app is created using Gtk, Qt, or another graphical tool kit? I just published a poll asking what desktop environment you use and to answer that question. I frequently see posters on various forums declining to use a program because it uses a different tool kit than their desktop. How widespread is this behavior and why the preference?
It seems to me that limiting ourselves in this way only lengthens how far applications need to come in order to meet every user's needs. KDE, GNOME, and other environments have been working to ensure interoperability between them, but if our (the users) biases defeat it, then there is still more work to be done.