Domain Name Filter is a FREE product that will allow users to input a domain name list and then apply filters to the list. Current filters allow option to exclude: hyphens, numbers, minimum length, maximum length, specific date (more info on product page) and the ability to output domains that were found in our CUSTOM dictionary that includes 845,143 words!
http://www.dnware.com/products/filter/index.php
http://www.dnware.com/products/filter/index.php