[final kaoss]

The author hasn't updated it in quite some time. I still use it on my vbulletin 4 which is updated to the latest version. You can use them if you find they work for your forum but be aware of the warnings listed for each one.

I don't use the html optimizer because using gzip/mod deflate, the whitespace really doesn't become a big issue... unless you have thousands of linebreaks with no content, even so, I don't find a reason to let it consume extra cpu & memory when compressing with gzip/mod deflate.
Javascript Optimizer, I think I remember there being issues with loading the editor & other mods with it enabled, so I leave it off.
The Attachement Optimizer has a warning against using it on apache servers, since I run apache, I leave it off.