Search Engine Optimization

Swoosty SEO Tools for Firefox

Automatically displays the Google pagerank and Alexa ranking of each site you visit, and provides essential tools for SEO and analysis: indexed pages, backlinks, related links, keyword density analyser, nofollow highlighting, Alexa infos, WHOIS...

Page Rank Display for Google Chrome

This extension gets the toolbar PageRank of the page open in the current tab. If it fails it tries getting the PR of the hostname instead, and if that succeeds it shows the PR followed by the letter h. If neither succeeds (if the site doesn't have a PR or for some reason the extension isn't working as it should) it will show a greyed-out question mark.

When you click the extension icon it will bring up a popup/overlay with links to several things interesting when analysing a site, such as pages indexed by Google, Alexa information and backlinks from Yahoo! Site Explorer.