NameMing - Get smart domain name suggestions using synonyms, suffixes, prefixes, short url, new gtlds to find the perfect domain name. Generate ideas for social user names and check availability for free!
Whoisology - Connected database of whois records and whois history
NameQL - Fast and friendly way to find a usable name for your idea, app or business
WhoisThisDomain - Domain name lookup tool that allows you to get information about domain registration from WHOIS server.
NameBounce - NameBounce is a powerful domain name and business name generator. Using our advanced search algorithms, you can routinely uncover domain names that would be worth $2,000 or more on a resale site.
JSON WHOIS API - Parsed domain WHOIS data from any WHOIS server via RESTful API with metered pay as you pricing.