Link Popularity & Back Link Analysis Tools

Open Site Explorer1.Open Site Explorer
Powered by SEOMoz, Backlink analysis tool ability to see up to 10,000 links to any site
Majestic SEO2.MajesticSEO
Offers comprehensive source of backlinks information.
Back Link Watch3.Back Link Watch
Helps you to find inbound links information such as :anchor text, pagerank, quality of backlinks
 Ahrefs - Backlinks and SERPs Research4.Ahrefs
Tool for Backlinks research and SERP analysis.

 

Search Engines’ Back Link Check Operators

Google.com Operator: link:www.yoursite.com
Yahoo.com Operator: link:www.yoursite.com
Bing.com Operator: linkfromdomain:www.yoursite.com

 

Competitive Research Tools

Alexa.com1.Alexa.com
Provides info about including Top Sites, Internet Traffic, Related Links, Online Reviews
Compete.com2.Compete.com
Web traffic analysis service , mainly websites from USA
SEM Rush3.SEMRush.com
Service for competitors research, shows organic and ppc keywords for any site
SpyFu.com3.Spyfu.com
4.iSpionage.com