1)   XTweak 3.14
XTweak is an advanced tweaker and optimizing tool especialy designed for Windows XP/2003: With XTweak you can - defragment disks and registers, - clean file and registry sistems, - tune computer performance, - and much more...

 2)   DTweak 3.14
Tweak a Myriad of Windows Vista Features and Enhance its Performance: With DTweak you can - defragment disks and registers, - clean file and registry sistems, - tune computer performance, - and much more...

 3)   Best Vista Tune Free 1.2
Best Vista Tune Free allows you to fine-tune your Windows Vista easily and safely. It gives your system the look you want, and optimizes its performance for the tasks you do most often, while cutting CPU and RAM expenses on the tasks you are.

 4)   Best Vista Tune 1.2
Best Vista Tune allows you to fine-tune your Windows Vista easily and safely. It gives your system the look you want, and optimizes its performance for the tasks you do most often, while cutting CPU and RAM expenses on the tasks you are.

 5)   Vista Manager 1.5.0
All-in-One utility to optimize, tweak, clean up Windows Vista. It bundles more than 30 different utilities in one! Get access to hundreds of hidden options, clean registry and junk files, tune up Vista boot menu and many other utilities.

 6)   DTweak Free 3.9
DTweak is an advanced tweaker and optimizing tool especialy designed for Windows Vista: With DTweak you can - defragment disks and registers, - clean file and registry sistems, - tune computer performance, - and much more...