… definitely is Mozilla Firefox . IE just sucks and I only use it when finally checking if an application also works fine with IE.
There are a lot of very useful addons for developing with Firefox:
| FireShot | Very nice tool for screenshots of current page contents. |
| Firebug | “You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page” and also check why you again screwed up the layout. |
| Web Developer | Web developer tools. |
| Tamper Data | Tamper form data before finally submitting. I really love that one! |
| YSlow | Find out why your website is soooo f***ing slow. |
| Live Http Headers | View HTTP headers of a page and while browsing. |