"It is a CD that contains all the updates found on the Windows Update Website, including Service Pack 2, with a small standalone programs that run the updates in the order specified by Microsoft according to the order set by Microsoft."

The Secunia PSI detects installed software and categorises your software as either Insecure, End-of-Life, or Up-To-Date. Effectively enabling you to focus your attention on software installations where more secure versions are available from the vendors

"Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds."