Hello, I use Kate for my C++ coding on Linux, but I got quite used to a handy plugin available on Windows: http://npp.incrediblejunior.com/
Basically it lets you chose some search paths and glob patterns, then when you hit the plugin's shortcut a window is displayed. The window simply contains the list of all the matching files in the search paths, and you can easily go through them by typying something.

The search also takes camel case into account, so for example typing "scri" will make the list only show Script.h, Script.cpp, ScriptParser.h, ScriptParser.cpp.
Typing "scri par" will further filter the list to ScriptParser.h, ScriptParser.cpp.

Is there anything like that?

On a side note, I see the ctags search doesn't work too well. If I select a word and I go to Declaration, the ctags list is simply empty. Just deleting the last character in the search field and re-typing it is enough to get the list populated.