Optilink 

OptiLink uncovers the secrets behind top ranked web pages, optimizes internal links, finds link exchange partners, monitors link exchange partner links to your site, finds Super Affiliates, and spies on your competitors' web sites.
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SnooPR 

SnooPR is a software tool to evaluate the amount of PageRank received from a linking page. It automatically queries and calculates the estimated PR Boost that the linking page will give out. Usage is very easy - just enter your URLs and press Analyze
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