Magical Jelly Bean Keyfinder is an open source freeware utility that examines your Windows registry and returns the Product Key for Windows or MS Office.
Great for making a backup of the key if you have lost the original written copy.
It works on Windows 95, 98, ME, 2000, XP, Vista, Server 2003, Server 2008, Office XP, [...]
CDBurnerXP is a really versatile disc burning program.
It makes copying audio and data discs a breeze and just as simple to use to create audio or data discs.
If you have ISO files it will burn discs from them.
CDBurnerXP is also capable of burning lightscribe labels onto special lightscribe discs if your burner has this feature [...]
The free version of Express Burn does most things you would want when it comes to creating CDs. However the publishers give it away free to encourage you buy Express Burn Plus which has more features, especially DVD authoring ones.
Express Burn
Cobian Backup is a neat little program to simplify and automate backing up your important files.
Here is what the author says about his program.
“Cobian Backup is a multi-threaded program that can be used to schedule and backup your files and directories from their original location to other directories/drives in the same computer or other computer [...]