FronTools

You can measure your blog popularity on the web with free tools. Link Popularity tells you the overall visibility of your website. These tools will use web searches to find how many sites are linking to yours and sometimes they will also give you a report with comparisons to other online sites.

There are many Free Link Popularity Checkers on the web, but i recommend:

Marketleap

Widexl 

Submitexpress 

Webmaster-toolkit

In most common search engines, like Google, you can use a special search to know who is linking to you. Try to insert this in a Google search:

link: [your url here]