Domainr - Domainr is the only ICANN-accredited domain status API provider.
DomainWheel - Smart startup name generator
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
Alter - A beautiful tool to convert code into an image
Instant Domain Search - Search domain names instantly by showing results as you type.
Naming Magic - With a product description and seed words the site will use AI to generate a handful of names and then go one step further and tell you if the domain is available.