Markus Tober made LinkVendor and all the SEO tools in context of his diploma thesis. The fundamental idea was to build lots of useful tools that can be used by everybody to learn, understand and improve. All the LinkVendor tools are for free.

Linkvendor wurde lokalisiert und ist jetzt auch in deutscher Sprache verfügbar! Hier gehts zur deutschen LinkVendor-Site.

• Link Value
  This special LinkVendor Tool calculates the link value per month.
• Analysis Linkpop
  The Analysis Linkpopularity Tool generates a complete site analysis. Shows backlinks, indexed sites, Google PageRank™ and also if your domain is listed in DMOZ and Yahoo directory.
• Domain Popularity
  The Domain Pop Tool shows you all backlinks for the given domain, including up to 10 subpages per backlinking domain, host IP and Google PageRank™. You also get anchor texts from the backlinking domains.
• PageRank Authenticity Check
  The LinkVendor PageRank™ Check Tool shows you the PageRank™. Also the PageRank™ will be checked of authenticity.
• SEO Challenge
  The SEO Challenge Tool compares two domains and calculates a score, based on a self-made algorithm from LinkVendor.
• SERPs Position
  LinkVendors SERPs Position Tool shows the position your domain is ranked for the given keyword and compare the results by Google, MSN and Yahoo. (Only 100 results)
• Outbound Links
  The Outbound Links Tool shows every outgoing link from the given domain. It also shows internal links.
• Keyword Density
  The Keyword Density Tool shows you how often appears which word in content.
• Cloaking Detector
  The User Agent Cloaking Detector Tool simulates the Googlebot to detect cloaked content.