Lifehacker (lifehacker.com) is a productivity site that I frequent. Every year the put out a list of free applications for windows and call it the Lifehacker Pack 2010. The most recent list is out.
This is a great list of applications that any windows user should use. From burning cd’s / Dvd’s to tools to re-install your computer software. Over the years I have found that I automatically use most of these tools. Happy Installing.