I found it at www.linkvendor.com. These are the tools that are available:

¬ Link Value
¬ Analysis / Linkpop
¬ Domain Popularity
¬ Domains from IP
¬ PageRank Check
¬ Multi Pagerank
¬ SEO Challenge
¬ SERPs Position
¬ Outbound Links
¬ Keyword Density
¬ Cloaking Detector
¬ Search Engine Spider
¬ URL Rewrite

Definatly a must have in your browser favorites!

But how can these tools be profitable for you? Well, when you start up a new niche-site you definitely want a lot of (good) backlinks, right? Well, just view all the backlinks from your competitors. There will be a lot of (good) backlinks you can use as well.. This way you can beat your competitors, just with combining all the backlinks from all your competitors to one niche site: yours!