Link Popularity & Back Link Analysis Tools
|1.Open Site Explorer
Powered by SEOMoz, Backlink analysis tool ability to see up to 10,000 links to any site
Offers comprehensive source of backlinks information.
|3.Back Link Watch
Helps you to find inbound links information such as :anchor text, pagerank, quality of backlinks
Tool for Backlinks research and SERP analysis.
Search Engines’ Back Link Check Operators
Competitive Research Tools
Provides info about including Top Sites, Internet Traffic, Related Links, Online Reviews
Web traffic analysis service , mainly websites from USA
Service for competitors research, shows organic and ppc keywords for any site