Microsoft Security Essentials Windows 7 or older
Computer Utilities
TeamViewer Remote control a computer
Clonezilla open source disk imaging
ImgBurn Great free ISO maker/burner
Easeus Partition Master make or merge partitions easily
Revo Uninstaller Really really uninstall programs
Open Office Free alternative to Microsoft Office. It can edit and save Microsoft office files.
AV Tools
VLC 32 Play almost any video file or DVDs
VLC 64 Play almost any video file or DVDs (64 bit)
iStuff
Update Stuff