Which company has the best mortgage refiance rate?

Several links may be found on Google.  One link which appears to be
the most comprehensive is the following:

http://lenderscompete.com/


Good luck in your search.

You might try this link as well. It has a really nice mortgage rate
shopping page that offers quotes from many different lenders. It is
quick and easy to access and offers comparisions based on APR and
lender fees. The listing of specific lender fees is something I
haven't seen too often and it can be helpful in making an educated
decision.

http://www.interest.com/rateshopper/