There are lots, lots of Windows optimizers on the market – disk cleaners, disk defragmenters, registry cleaners, registry defragmenters, setting optimizers, etc. Today I’m making a test of six, (supposedly) completely different, disk cleaners. They are (random order):
Disk Cleanup
CCleaner 2.1
TuneUp Utilities 2008
Disk Cleaner 1.5.7
Wise Disk Cleaner 3.6.1 Free
Windows & Internet Cleaner Pro 5.92
The criteria: total filesize of all detected junk files on the test PC.
The test: all the cleaners were ran, one after another, in scan mode (excluding Windows & Internet Cleaner Pro 5.92, which was ran last, because it has no scan mode and deletes files immediately), letting them show us their added free space offer.
OK, so let’s start!
1) Disk Cleanup (aka Cleanup Manager or cleanmgr)
Version: The one that ships with Vista
Author: Microsoft
Website: http://microsoft.com
License: OEM
Total amount of detected junk data: 3,07GB
2) CCleaner
Version: 2.1
Author: Piriform
Website: http://ccleaner.com
License: Freeware
Total amount of detected junk data: 47,2MB
3) TuneUp Utilities 2008
Version: 7.0.8007
Author: TuneUp Software GmbH
Website: http://tune-up.com
License: Shareware
Total amount of detected junk data: 6,0GB
4) Disk Cleaner
Version: 1.5.7
Author: R. J. Moerland
Website: http://diskcleaner.nl
License: Open-source
Total amount of detected junk data: 131,4MB
5) Wise Disk Cleaner
Version: 3.6.1
Author: WiseCleaner
Website: http://wisecleaner.com
License: Freeware (shareware version available)
Total amount of detected junk data: 389,58MB
6) Windows & Internet Cleaner Pro
Version: 5.92
Author: Neoimagic
Website: http://neoimagic.com
License: Shareware
Total amount of detected junk data: 217,25 MB
It seems like when it comes to disk cleaning, TuneUp 2008 beats all others hands-down. Anybody not willing to pay can simply use Vista’s built-in cleaner, or get Wise Disk Cleaner. Vista’s cleaner has the advantage of cleaning out all Vista upgrade leftovers, in the test PC’s case, 1,8GB. Remember, CCleaner, Tune Up, W & I Cleaner are all more than the cleaner. They’re all fully-featured, simple to use system management and maintenance tools. Use the links to find out which is your personal choice. 
Nice one, but tell me this when it comes to practicality is int CCleaner the better option???
Actually you’re right, but the test was only about the disk cleaning abilities. Of course, CCleaner beats all other listed freewares in features, and TU beats all of them but is paid. I edited my post a bit.
hmm i use CCleaner. I also have used Tuneup and its very good only thing is its not free and small like CCleaner. So if you want a lightweight cleaning utililty the CCleaner is for you
There is one more tool – Junk Files Cleaner
http://www.digeus.com/products/junkcleaner/
I tried, it might be also interesting new utility.