I know that many of you like System Mechanic, so I thought of sharing this with our members
System Mechanic have started offering a free version.
Click on compare versions to see what the free version offers (read lacks )
System requirements
Update:Windows® 7, Vista, and XP
256 MB of RAM
30 MB of free hard drive space
The installer is 572kb, run it and it will download an 18 mb file and offer to save the installation file to a location of your choice.
During installation, choose Free version. You need to provide a valid email id to get a free license. Many softwares do this, (for eg: Avast, Avira).
You will receive a license key in your email inbox, use it to activate System Mechanic free version.
Hope this helps
source: