Domainr is a fast, free utility for finding and registering domain names for your website. Domainr searches the entire domain name space, instantly checking availability for .com, .net and all other domains at the top-level.

Bust a Name/DomainFriend is a tool to help you find domains and manage them. We have combined linguistic data with a unique interface to let you quickly search through thousands of domains and see which are available.

BuiltWith is a website analysis tool, providing technical analysis and SEO optimization information to further your website’s marketing, sales and navigation effectiveness. (more…)

Ajaxwhois.com is developed and maintained by Internet entrepreneur Carl Mercier as a pet project. It was originally intented to be a proof of concept and a fun side project. However, the users’ response has been so overwhelming that it has since been turned into a full-blown website. (more…)

AjaxLookup is a free service that instantly checks domain name availability.