I like to browse with Firefox from both Windows & Linux, and find a number of plugins useful. I have just installed these on my freshly reloaded laptop and that reminded me to share them with you all.

• British English Dictionary – Allows spell checking of forms and text fields
• IE Tab – Windows only but good for viewing sites that rely on IE’s rendering engine (EG: OWA)
• SwitchProxy Tool – Great for testing Proxy Servers
• HTML Validator – Useful for checking web code
• Firebug – Edit, debug, and monitor CSS, HTML, and JavaScript live in any web page
• FaviconizeTab – Allows you to reduce tab to favicon size, ideal for email etc

Updated: 2009-02-17 to include Firebug
Updated: 2009-08-25 to include FaviconizeTab