Best Free Backlinks check

We know the importance of backlink for any website. More backlinks means more important the website for search engines. links are those which come from same website. Search engine dont care for reciprocal links. Search engines give more importance to quality inbound links rather than reciprocal links. 

Best Free Backlinks checker are:

1. Backlinkcheck : In this tool you check three url at same time. this tool is very quick. 

2. Backlinkwatch : This is not very quick tool because this will analysis all backlinks in same page and give results. 

3. iwebtool : This will show page rank of your inbound links. 

4. Smartpagerank : I like this tool very much. this will give various types of information. This provides various informations like Domain age, alexa traffic number of pages indexed in various search engines, and value of your website. 
Negatives not updating daily. slower than other backlink tools.

5. Addme : this is another good option to analysis your back links. 

I suggest 

1. Backlinkwatch if you seriously wanna check your backlinks. 
2. iwebtool because it shows page rank of your backlinks 
3. Backlinkcheck 
4. Smart page rank, 
5. addme. 

I personally use backlinkcheck for my quick anaylsis. iwebtool to know the page rank of pages i added comment. So, that i know which page has better page rank. if you seriously wanna dominate in some particular keyword these analysis will help you in better search engine ranking.