You can get everyday a huge list of expired domain names from WSMDomains . It also checks if the domain names are registerable. There are several tools to filter out the domains that you are looking for, but you have also to check which domains can be registered. And thats very time consuming.

This tool have all steps combined, simply input the URL of the expired domains and the output will be the domains you are looking for and that are available for registration

Depending on the speed of your internet connection it takes some time to download the list and check if the domains are available for registration. Just let the tool run in the background and wait till you get the "done" message.

Requirements:

· Internet Connection
· .NET Framework 2.0