LeanDomainSearch is a free domain name registrar provided by WordPress. You can search for a domain by first inputting a keyword. LeanDomainSearch then generates a list of available .com domains with that keyword. When you select a domain, LeanDomainSearch will check to see if the name is available as a Twitter handle, and then guide you to register your domain with Bluehost. LeanDomainSearch is best for companies that use WordPress for their websites.
BustAName is a free domain generator that stands out by comparing the domain prices among domain registrars like 1&1, NameCheap, and Dreamhost. You can choose from .com, .biz, .net, .org, .info, and .biz extensions and begin your search by inputting multiple keywords at a time, which BustAName will then select from to come up with your list of possible domains. Given its comparison feature, BustAName is best for companies needing the best deal on a domain.