NameRobot Toolbox - All tools to create & check startup names in one place
One Word Domains - Database of all available one-word domains
Name Ideas Generator - A simplistic domain name generator.
Handshake.org - Decentralized certificate authority and naming
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
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!