Minify & Concatenate Enqueued Scripts & Styles.
It also has a pretty cool admin window (helper), which shows all the scripts and css files which are minimized and not minimized. This makes it very easy to in- /exclude them.
Works as it should.
This is the first minify plugin, which does not conflict with other plugins. And it is easy to work with, because helper function tells you what js and css has been loaded on your site. I recommend it.
One of the few minify plugins that works as expected. Well thought out and easy to use. Plenty of filters to override settings too.
Actually because of the "Helper" I think this is the most user friendly minify plugin. You have seen it put a tick on the handles that are currently being minified? Colors too. Not necessary if you know handles from code but damn nifty. Also when devs. change handles without telling, sometimes they do. Even has a note about why perhaps not to include just everything. Handles and basic understanding of load are 2 big topic with this so for as much as it is possible I think plugin is newbie friendly :)
I thought it was crap to begin with though! Complained about not being able to process. Then I thought it might not work too well with Apache password active. Was right.
We use MinQueue on nearly all our sites, it's the only plugin that handles minification and concatenation that is usable as a developer.