What are some alternatives?
When comparing Undeveloped and Lean Domain Search, you can also consider the following products
Nuage - Nuage provides domain naming services.
Instant Domain Search - Search domain names instantly by showing results as you type.
Domainz.io - Premium domains, for not so premium prices
Domainr - Domainr
Short Domain Search - Find short, available single-word domain names
Agile Domain Search - Search great domain names for your website in seconds.