What are some alternatives?
When comparing Ajax Domain Finder and Domain Suggestions, you can also consider the following products
Machiname - Machiname is domain name search tool that lets you enter keywords and it will look up domains availability for every combination
DomainHole - DomainHole has the tools to allow you to find a great domain name.
namegrep - Domain name search with regular expressions and curated sets
BrandBucket - The original marketplace for business names and creative domain names.
Domainr - Domainr
Instant Domain Search - Search domain names instantly by showing results as you type.