Ultimate Windows Tweaker is a Tweak UI Utility for tweaking and optimizing Windows Vista, 32-bit & 64-bit. It can simply be downloaded and used as a portable application to customize your Windows Vista to meet your requirements. With judicious tweaking, It can make your system faster, more stable, and more secure with just a few mouse clicks. The tweaker detects whether you have IE 7 or IE 8 installed and accordingly offers you the relevant tweaks only. This Tweaker was released at the Microsoft South Asia MVP Meet 2008.

The utility has a simple easy-to-use user interface, with the tweaks being classified in separate heads based of their functionality. Most tweaks are hidden inside Vista, and what this tweaker does is to try and put the useful one's in one place. It has over 130 tweaks, but is yet, just a 380 KB .exe file, which does not require an install.

The tweaks are classified under seven categories and can be accessed through a common interface, just like your Windows Vista Control Panel.
1) Personalization
2) User Accounts & UAC
3) System & Performance
4) Security
5) Internet Explorer (IE7 / IE8)
6) Network Optimization
7) Additional Options