Domainr - Domainr is the only ICANN-accredited domain status API provider.
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!
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
ConnSuite BETA - All your social accounts in one single place
Instant Domain Search - Search domain names instantly by showing results as you type.
Namelix - AI business name generator