What are some alternatives?
When comparing Lean Domain Search and Instant Domain Search, you can also consider the following products
Domainr - Domainr
namegrep - Domain name search with regular expressions and curated sets
NameMesh - 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!
NameQL - Fast and friendly way to find a usable name for your idea, app or business
NameBounce - NameBounce is an intelligent domain name and business name generator. Discover hundreds of new business name ideas with available domains, all for free!
Wordoid - Wordoid is a web application which helps to solve a common problem