What are some alternatives?
When comparing Agile Domain Search and Instant Domain Search, you can also consider the following products
Domainr - Domainr
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
Short Domain Search - Find short, available single-word domain names
namegrep - Domain name search with regular expressions and curated sets
NameBounce - NameBounce is an intelligent domain name and business name generator. Discover hundreds of new business name ideas with available domains, all for free!
NameQL - Fast and friendly way to find a usable name for your idea, app or business