I've been using Freshdrop.net for a while now, have found some great domains.
Just all the dropped domains (.com and .net) daily.
The Domain Name Wire is one of the new source of Domain Name Industry to find the expired domain names. Actually the domain names is different since it actually lets you to search huge database of expired domain names and lowers narrow down your search according to your need.
Thank you!! Currently our domain consist of hyphen and we wanted to buy a domain without hyphen domain. As Hyphen domain is not good for branding.
you can also search in easytoreselldomains.com or domainsbot.com for expired domain names.