For those not yet using Windows 7 this famous tweaking tool is now a freebie and can be downloaded at Major Geeks.

In case you lost your serial number use this one instead: XSA092-11TA9R-8K12YT

Act quickly because the offer expires on Feb.1, 2010

Site offers a couple other great freebies as well.

These 10 freebies improve Windows 7′s looks, functions, and make it easier, safer, and more convenient to upgrade to.

EasyBCD is NeoSmart Technologies’ multiple award-winning answer to tweaking the new Windows Vista bootloader. With EasyBCD, almost anything is possible. Setting up and configuring Windows boot entries is simple, and there is no easier way to quickly boot right into Linux, Mac OS X, or BSD straight from the Windows Vista bootloader – on the fly, no expert knowledge needed!

Great for customizing the order and verbage of the boot file installed with Windows 7 as well. Of course its a freebie. I installed and used it under WinXP

Furthermore, released under license as freeware, home and commercial PC users alike can benefit from PowerTools Lite without having to pay for the application – allowing a saving on other comparable registry repair applications and the cost of professional IT support.

Cleanmem works in a matter of about 5 sec. It uses a windows api call that is in Windows 2000,xp,2003,Vista & 2008
that tells windows to cleanup the workspace of a processes thus freeing up any memory the process no longer needs. Other memory cleaners end up forcing the memory into the page file slowing down your system.
This tool does not. The API call frees up unused memory from programs, when a program needs the memory again it can simply take it back instead of forcing the memory out of ram and into the page file.

Some useful free utilities.

Here you will find the most common files that may be missing or corrupted on your computer.

CPUUsage System Service is a free tool that displays the cpu load as a tray icon image. It’s very easy to use and utilizes minimal resources.

Lots of good freebies here.