Changes

* Sublime Text & Zen Coding (recently reborn as [http://docs.emmet.io Emmet]). Saves a lot of keystrokes when writing web content.

* The best one IMHO is [http://www.sublimetext.com Sublime Text 2]. Oh, okay, I can't resist - I'm going to cheat and list a second: everyone needs to stop writing just CSS and complement it with SASS (syntactically awesome stylesheets) & Compass - http://sass-lang.com/. Totally invaluable for any front-end work. It makes CSS fun.

* Version control. My own strong preference is for git (either managed locally or through github.com), but really, just pick a version control solution and use it. If you value your work at all, it should be in version control. Smart use of version control can make finding and fixing problems in code much, much easier - but even fairly naive use of it leaves you with much, much better tools for fixing screw ups than you have without it.