Links

Other cool Firefox add-ons for web development (and more):

• Web Developer
  Adds a menu and a toolbar with various web developer tools.
  
  User Agent Switcher (Web Developer required)
  Adds a menu and a toolbar button to switch the user agent of the browser.
• Firebug
  Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page... Firebug 1.2 requires Firefox 2 or 3.
• IE View
  Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.
• Chrome View
  Open a page in Google Chrome on Windows.
• OperaView
  Open pages in Opera from Firefox context menus.
• Safari View Win
  Adds a context menu entry to open the currently viewed web page in Safari on Windows.