New.net
Website of one of the leading alternate roots. Includes a download of a plug-in that will allow users to utilize the alternate roots provided. The website also includes registration services.

IPv8 G:S Numbers and TLDs
Listing of proposed alternate TLDs in the 128-bit DNS supported by IPv8. These TLDs are NOT supported by ICANN.

Dot-Web
Registration for the .WEB TLD.

Domain Name Systems
Alternate Registry of the .xxx and .sex domains.

OpenNIC
Completely open and democratically managed root domainname system.

AGN Domain Name Services
Registration of alternative .earth, .usa, and .z top level domains.

Generic Universal NameSpace - .www
The Generic Universal NameSpace (GUNS) is an alternative to the Legacy namespace and uses the top level domain (tld) "www" as its root. Domain registrations under www resolve using an inclusive (alternate) namespace root.

Mobile Domain Names Registrar
MobileTLD.com registers domain names for Wireless Internet use in 9 zones (.mobile, .imode, .mmode, .palm, .wap, .hdml, .3g, .wire, .pda) and 340 second level spaces.