The bundled Optimizing tool lets you tweak windows startup and shutdown speed; tweak hardware to increase system speed and performance and lets turn off unnecessary system tasks.
The Cleaner section lets you find out which files or folders absorb your disk space and shown with chart. You can find and clean junk files, duplicate files, checks your registry and repair incorrectly linked registry entries, automatically remove invalid entries; etc.
With the Customization utility you can control what is started on Windows startup, tune up Windows 7 boot menu; edit context menu (right click menu) items, customize system desktop, menus, toolbar and notifications settings and automatically change desktop wallpaper on background.
This tweaking and customizing tool is suitable for professionals and non professionals alike; to use some of the utilities bundled with the tool are required more knowledge about the system. More information and download from here
[Remember that Windows7 Manager is a beta version now, you can use it free until Windows 7 final version released]