Neat little Firefox extension from SEOBook – the all new SEO Toolbar. Easy to install and with a slew of features that should help you gather more than enough data for SEO clients and to promote your website.
Looking from left to right, we have the configuration button, Page Rank, links in to the site from various different places such as Yahoo, DMOZ, Best of the Web, age of the site, traffic and site stats information. Then there is the Competition button which takes some playing around with but allows you to compare up to 5 different sites, offers suggestions for keywords, Google trends, and all the WhoIs data, amongst other useful links. Then there is the search engine ranking checker, which is handy to have at your fingertips, and will export data to a CSV file for easy manipulation and comparison.
Download the SEOBook toolbar today, and add it to your arsenal of SEO tools.