Although not strictly related to the site, below are software/websites that I think are worthwhile.
BurnAware Free
http://www.burnaware.com/burnaware_free.html
A straight forward disc burning application. Only thing missing is disc-to-disc copying, though a paid version is available for that.
I've been using this after Nero became bloatware, and find it works well for occasional use.
Explzh
http://www.ponsoftware.com/en/
(English)
http://www.ponsoftware.com/index.htm
(Japanese 日本語)
A file extractor utility developed in Japan. Although it handles the usual formats such as ZIP and RAR,
I found it particularly useful for extracting files out of MSI and CAB.
Fedora Linux
http://fedoraproject.org/
A Linux based operating system.
LibreOffice
http://www.libreoffice.org/
A good alternative to Microsoft Office. Personally I think it's well suited to student and home use.
Piriform CCleaner, Defraggler, & Recuva
http://www.piriform.com/
Utilities made by Piriform to clean your registry and Internet cache, defrag your drives, and recover deleted files.
Sun VirtualBox
https://www.virtualbox.org/
Virtual PC software.
