So, where is your favorite browswer/plugin detection code?

I need to update ours and everything is either really old or doesn't get version numbers.
I am looking for

Operating System

Browser

Flash

Qucktime

Media Player

Acrobat

Java

Cookies


Any help would be marvelous...the differences with IE and everything else is such a pain..I now have a huge headache from this!

xposted