I’m really a Safari fan, but I appreciate the innovations that Firefox brings to the browser ecosystem. Firefox 3.5 is continuing that string of innovation with a number of new features. As a developer, the CSS3 additions are what excites me the most.

One other feature I’ve just come to notice (as of beta 4), is the clickability of links in source code view.

Simply put, if you have a link to a javascript or css file in your source code, you can click it and it will load the associated file (also in source view). For digging around through source code, this is huge.