What are some alternatives?
BrandHunt V2 - Search/track domain & social media handles in real time.
NameQL - Fast and friendly way to find a usable name for your idea, app or business
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
Startup name check - Startup Name Check is a free service allowing you to validate names for your next startup, side hustle or side-project. Works for numerous domains and social networks. All information is displayed in a clean table layout.
Undeveloped - Domains you never thought were available
NameBounce - NameBounce is an intelligent domain name and business name generator. Discover hundreds of new business name ideas with available domains, all for free!