New BETA release of Secunia PSI

http://secunia.com/blog/52/
 
"Now available from Secunia is the BETA release of the latest PSI.
Amongst the usual programs PSI scans through for needed patches, the
new version will now also tout a feature called 'Secure Browsing'.
The new feature informs users of what programs and plugins are
integrated directly with their browsers and any security issues
affecting the browsers and their plugins."

I think that Secunia's PSI fills a unique niche.  Being able to see which of your packages is out of date is a valuable tool that Microsoft does not provide for non-Windows binaries.  Keeping up with patches for your system binaries is important.  The newest Beta version appears to be looking at your plugins for your web browser, too!