The Domaining plugin for Firefox shows the PageRank, Backlinks and Whois information of domain names listed in aftermarket auction sites such as Sedo, Afternic, TDName and more.

Optimize website content and ad campaigns. Find related keywords. Build keyword lists that cover all variations. Position check. Check keyword density. Have titles, headers etc. "weight" more. Analyze competition, e.g. backlinks and page rank

Link Exchange Easy: Find, suggest, add and exchange cool reciprocal links to improve your web site link popularity and pagerank. Support find links and backlinks by keywords and website.

Blog Finder is no-spam blog commenter software that provides you with a great way to get free quality backlinks for your sites without using any risky tactics that could destroy your search engine rankings

Great tool for finding expiring and new domain names, as well as checking pagerank, alexa rating, backlinks and more

Use BackLinks Master to find all the backlinking sites in a fast, easy way. You can check a link's anchor text, its status, if it's direct or indirect, and export all info in a CSV report for further analysis.

Webmaster tools this is SEO software that tells number of backlinks in the top five search engines, pagerank, alexa rank and much more. This software can be used to help you determine what niche to target as well as what keywords.

SitePopularity will check any number of websites for the most important ranking criterias such as Google Pagerank, Alexa Traffic Rank, Dmoz listing and links from other websites. SitePopularity features advanced functions, yet it''s easy to handle.