Sorting the tools isn't as easy as I thought, but imo the best idea would be two different main sections with similar or same subsections.
The main sections would be general tools and "specific" tools.
The thing is, that there are many very specific tools which solve only a very specific, limited problem and would only be used by a very limited amount of users.
The general tools section would contain widely used & time-proven tools, which, as you said, should be identifiable by the user at first sight.
As for the subsections:
AI can be left out as the only two currently in there are 1 not fitting and a 2nd that's hardly used.
Others should be: Jass/Scripting, 2d Art, 3d Art, Object Data, Gaming, WE-addons, Text markup.
Again, pending tools should not show up in the List-View.