Firefox + Firebug for Web Development
Would you want to edit HTML, CSS, and JavaScript easily – plus – LIVE? Then firefox with firebug add on is a must. You can edit the design, css, and javascript on the go.

Together with XAMPP Portable, Notepad++ Portable and Firefox Portable, Firebug will be a killer tool for web development.
The firebug come with cool feature named Inspect which is automatically deect the current area from your cursor to HTML so you don’t need to check what element it is.
Not only designing, firebug can give you speed test of your web!
Get Firefox Portable | Get Firebug

Firefox + Firebug for Web Development is posted on February 12th, 2009 by buchin. This post is filed under: firefox, Add-on, Cascading Style Sheets, CSS, Firebug, firefox, HTML, JavaScript .
what about opera with the dragonfly, mas?
[...] Firefox + Firebug for Web Development (masbuchin.com) [...]
[...] a favorite extension and their data. If you have your favorite firefox addon like down them all, firebug, etc, you can use this to [...]
@dani
let me check it out. I don’t use Opera that much