Alternative top-level domain names

There are a number of companies in the alternative top domain business. Essentially, their systems work something like New.net in that additional changes or software are required to make their domain names resolve, except that generally unlike New.net they have not forged many (or any!) partnerships with ISPs and hosting firms, so that the number of people who can access these "alternative" top domains worldwide numbers in the hundreds or at most in the thousands.

Alternative Top-Level Domains by 101Domainname.us