What are some alternatives?
When comparing Domainr and Nuage, you can also consider the following products
namegrep - Domain name search with regular expressions and curated sets
Domainz.io - Premium domains, for not so premium prices
Agile Domain Search - Search great domain names for your website in seconds.
Undeveloped - Domains you never thought were available
Instant Domain Search - Search domain names instantly by showing results as you type.
Brandpa - Domain names for startups