I just installed this set of menus and a toolbar for Opera and I’m quite pleased. It comes with quick links to reference for HTML, Javascript, and CSS, plus many handy tools on the toolbar for analyzing and validating a web page. I think this will be very useful for anyone doing web development who uses Opera for their browser.

One of the great features about this is the ability click a button to open firefox or opera to the same page. I often have to switch browsers, either for compatibility testing or because of others’ lack thereof, and this is another great feature.

http://operawiki.info/WebDevToolbar