C-Cleaner, I think the C is short for crap. I used to use another cleaner Spider but it doesn't work on XP, looking around I found the C-Cleaner utility which seems pretty nifty.
I mainly use it to get rid of the index.dat files in history,cookies and visited URL's. The .dat file gets progressively longer recording EVERY bloody website you've visited....even if you clear the cache. Microsoft seem to be keeping Mum on what this file does and the reason for it keeping tabs on your history, cookies and browsing.
It's also good for cleaning out old and decrepid registry entries, temporary files, clipboards, memory dumps etc etc.
Last pass for three days of surfing deleted 34 meg of junk.
And about the developers of C-Cleaner....or so they say......
Our team is made from a combination of late-working, highly-skilled staff and a heavy dose of caffeine! Together we design, create and maintain the software.
We also have legions of dedicated volunteers who help test, support and translate our software into over 30 different languages!