RegToy

RegToy is the kind of application that could really do wonders on your computer and may simply upset you because you've never heard of it before.
Although originally designed to let you play with the Windows registry a little bit, RegToy has evolved so much that now includes basically all the things you'll ever need to have full control over your operating system.
The application still works mainly as a registry tool so you can edit some of the hidden system settings, but it comes with a lot more than that. RegToy will bring you some of Windows XP tools including Character Map, Microsoft DirectX Diagnostic Tool, Remote Desktop Connection, File Sysytem Conversion Utility and many more.
Insofar as the main purpose of this utility is concerned, you won't miss anything as it is fully equipped to handle almost any registry-related task you can think of. With RegToy you can adjust tons of system settings, including file system, memory and cache related tasks.
In case you need to speed up the system startup or shutdown procedures, this application has it covered. There are loads of Explorer tweaks you can apply, like having the application focus follow the mouse cursor or disabling Windows Picture and Fax Viewer to mention only a few of the available ones.
If you have an NVidia graphics card, you can activate the overclocking feature, adjust Direct Draw and Direct 3D settings. Other areas that can be easily customized with the help of RegToy are the desktop and icons, the Taskbar, the Start Menu as well as the Context Menu.
Bundling a plethora of useful registry and system performance related functions, this software offers a lot more than expected. The abundance of features makes it more suitable for experienced users but beginners should have no problems in fully enjoying all its capabilities after spending a couple of minutes getting to know RegToy.