As a personal excercise in a programming language rather new to me, C#, I have started a commons category browser. It uses WikiSense to generate a commons category tree on-the-fly, and downloads the images in a selected category to be displayed as thumbnails.
Noteworthy points: * Tries to download existing image thumbnails first to increase speed/save bandwidth * Caches the thumbnail locally * Doubleclick opens the browser with the image description page
Note that not much else is working right now; it's just what I hacked together in an afternoon, in a programming language I'm still exploring. Scrolling through thumbnails doesn't work yet, some images are ignored, UTF8 category names are broken, etc.
Plans: * Fix bugs * Cache category tree locally * Load thumbnails in the background, so one can browse in the meantime * Analyze description pages in the background to mark images with troublesome templates
For those not faint of heart, with a fast internet connection and .NET 2.0 installed (Window$ only, though AFAIK the current Mono should theoretically support it):
http://magnusmanske.de/wikipedia/CommonsBrowser.zip
For the rest of you, here's a screenshot:
http://magnusmanske.de/wikipedia/Screenshot.png
Just the executable, source will be released under GPL, in anyone is interested that is ;-)
Magnus