1)   Nesox Link Checker Free Edition 2.0
Nesox Link Checker is a professional bulk web link validator, pagerank, link popularity and website traffic rank checker.

 2)   Link Popularity Check 3.0
Link Popularity Check is a handy tool for web site owners that allows you to check your link popularity and compare it to your competitors as well as a list of major internet web sites (msn.com, ebay.com etc). It displays the results in an easy form.

 3)   Link Buzz 1.01
Link Buzz is a link popularity checker software which allows you to check for the no. of backlinks you have on six major search engines and databases and also the no. of pages you have indexed on the Google, Yahoo and MSN for any website you enter.