What are some alternatives?
When comparing Agile Domain Search and Nuage, you can also consider the following products
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
Domainz.io - Premium domains, for not so premium prices
Namelix - AI business name generator
Undeveloped - Domains you never thought were available
Domainr - Domainr
Brandpa - Domain names for startups