Excellent Firefox Plugins/ Add-one for SEO

Which browser do you use? Which is the best browser? These are some of the common question which many people asked me.

Well as a SEO specialist my answer is very obvious…”FIREFOX” , though all browsers are important for graphic & web designers as they have to check their design, work & functionality on each & every browser. They have to check the compatibility of the site on each.

Anyways..I really like FireFox because it has many great Plugings that makes my work easy & helps in quick SEO analysis.
If you are an expert or just starting to learn SEO, these Firefox plugins are great. I use the majority of these SEO Firefox plugins on a daily basis, if not more often.
Here’s a listing of the best plugins available for SEO work:

Mahalo Share: Share and recommend Web pages across many different services; recommend a link once and have it automatically posted to any of Twitter, del.icio.us, MySpace, Ma.gnolia, Jaiku, your Tumblr blog, Facebook, Pownce, StumbleUpon, Mahalo, Faves, or Google Bookmarks.

Clipmarks: Your clips are saved on clipmarks.com and can easily be syndicated to FriendFeed, Twitter, Facebook or other sites. You can also post anything you clip directly to your blog (supports WordPress, Blogger, Typepad and more) or send it directly to friends or co-workers via email. Your clip collection is accessible from any computer with an internet connection, including your iPhone, Blackberry, or other mobile device.

SeoQuake: Seoquake is a Mozilla Firefox extension aimed primarily at helping web masters who deal with search engine optimization and internet promotion of web sites. General set of parameters consists of such parameters as:

Google PR (Google PageRank of current page)

Google Index (Number of indexed pages. Google version)

Google link (Number of links, pointed to the current page. Google version (Except links from concerned domain))

And similar parameters for many other search engines (Yahoo, MNS, Yandex, Rambler, Baidu) and some other miscellaneous parameters.

LinkChecker: Check the validity of links on any webpage.

SEOpen 0.8: Provides some basic tools to help with search engine optimization, including Google backlinks, yahoo backlinks, PageRank check, http header viewer, and more. All features are available by right-clicking on an open area of a web page, or by using the included toolbar.

Search Synchronizer 1.3.0.3: Synchronizes the firefox searchbox 16 default search engines, and the ability for you to add more!
So when you search for something from the google website, for example, the firefox searchbox shall automatically show that search. Works with:
-Google
-Yahoo
-MSN
-Ask.com
-and 12 others!

SearchStatus 1.25: Display the Google PageRank, Alexa rank and Compete ranking anywhere in your browser, along with fast keyword density analyser, keyword/nofollow highlighting, backward/related links, Alexa info and more.

RankQuest SEO Toolbar 3.9.2: RankQuest SEO(Search Engine Optimization) Toolbar provides you quick access to more than 30 intuitive SEO tools. Alexa Rank and Page Rank provided by Alexa and Google respectively ensure the popularity of the site. Once you download and install the SEO Toolbar you are only one or two clicks away from carrying out most of your day to day SEO operations.

FireFTP 0.99.1: FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

About This Site 1.1: One-click access to web site metadata – traffic, related and linked pages, and more – added to the Tools menu and context menu.

Page validator 0.3.3: Validates a page using the W3C Markup Validation Service. This is a simple extension that will work only for online pages.

SEO Link Analysis 1.0.3: Adds display of PageRank, linktext and nofollow links to external links in Google Webmaster Tools, Yahoo! Site Explorer and Microsoft Webmaster Portal

Google Global 2.0.1: Google Global allows users to see organic and paid Google search results as they appear in different countries, cities, regions, ZIP codes and IP addresses.

Google Pagerank Status 0.9.3: Display the google pagerank in your browser’s status bar.

Web Developer 1.1.6: Adds a menu and a toolbar with various web developer tools.

StumbleUpon 3.23: With StumbleUpon you can also connect with friends and share your discoveries, meet people that have similar interests, and check out what other people are discovering.

Bookmark Duplicate Detector 0.6.4: Detects Duplicate Bookmarks when bookmarks are added and specify where the previous URL is. You can also search and delete duplicates URL already in your Bookmarks.

del.icio.us Complete 1.3: del.icio.us is a social bookmarks manager. It allows you to easily add sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers and machines, but also with others.

This extension is not only a sidebar it provides an excellent post dialog as well.
Social Media for Firefox : A submission on Digg, Reddit, StumbleUpon, or Delicious is sometimes a good candidate for submission to the others. This add-on makes saves you the time of checking if an item has already been submitted by showing vote counts right on the home pages of these social bookmarking sites.

In addition, vote counts are shown in the Firefox status bar as you move from page to page again saving you the trouble of going through the bookmarking process if someone has beat you to it.

Compete.com: The Compete Toolbar automatically creates three alerts for every web site you visit:

Trust Scores: help you experience a safer web by warning you of potentially malicious (spyware, phishing) web sites

Site Profiles: tell you how popular the web site is, its rank, and how fast it is growing

Deal Light: automatically lights up if there are any special promotions or coupons that can save you money on the web site.

I am sure these plugins will increase your SEO efficiency.