Advanced WindowsCare Personal is a freeware comprehensive PC care utility that helps protect, repair and optimize your computer. It provides convenient solution for PC maintenance and protection.
This tool lets you run the pc faster, more stably and more efficiently.

Crap Cleaner or CCleaner does an excellent job in removing all traces of your Web browsing, as well as clearing out all junk/ temp files that Windows stores and it also includes a registry cleaner utility.
Homepage: http://www.ccleaner.com/
Features: http://www.ccleaner.com/features
Download:
http://www.ccleaner.com/download/builds/downloading-slim