Using plug-in’s for Firefox is a necessity and a gift that the Mozilla team has given us the freedom of having. There are a lot out there, and we want to share with you our top three.

1. SEO Fox

SEO Fox is a great tool for search engine optimization specialists. It gives you quick information on a websites Page Rank, Alexa Rank, and even the age of the website you are currently viewing. The entire feature list is listed below.

Features:

• PR: (Google PageRank) an estimated measure of global link authority
• Age: age pulled from Archive.org, shows the first time a page was indexed by Archive.org’s spider. The theory is that if Archive.org found a page so did many of the major search engines.
• Links: (Yahoo! linkdomain) shows a rough estimate of the total number of links pointing at a domain
• .edu Link: (Yahoo! .edu linkdomain ) shows a rough estimate of the total number of .edu links pointing at a domain
• .edu Page Link: (Yahoo! .edu link ) shows a rough estimate of the total number of .edu links pointing at a specific page
• .gov Link: (Yahoo! .gov linkdomain ) shows a rough estimate of the total number of .gov links pointing at a domain
• Page Links: (Yahoo! link) shows a rough estimate of the total number of links pointing at a page
• del.icio.us: number of times a URL has been bookmarked on Del.icio.us. Heavily skewed toward techy / Web 2.0 stuff.
• Technorati: an estimate of the total number of links to a site from blogs
• Alexa: rank based on website traffic . Heavily skewed toward internet marketing and webmaster related resources.
• Cached: (Google site:) shows how many pages from a site are indexed in Google
• dmoz: searches the Google Directory to count the total number of pages from a site that are listed in DMOZ, and the total number of pages listed in DMOZ that reference that URL.
• Bloglines: shows you how many people are subscribed to a particular blog via Bloglines.
• dir.yahoo.com: is a site listed in the Yahoo! Directory or not.
• WhoIs: makes it easy to look up the whois data for any site.

2. Google Global

Google Global Plugin

This plugin is a great feature for an SEO expert. It allows you to view search results on Google from other countries such as the United States, United Kingdom, Ireland, Canada, and Australia. This tool can open your eyes on your search results — allowing you to see how well you are optimizing your website globally.

3. Firebug

Firebug-Firefox

Firebug is a great all around tool for web programming allowing you to view code on the fly. If you would like to see a specific DIV on the style sheet and HTML, it’s as simple as clicking a button.