Generic top-level domains (gTLDs) are the non-country-specific top level domains maintained by the Internet Corporation for Assigned Names and Numbers (ICANN), and the most popular include .com, .info, .net, and .org.
ICANN is responsible for ensuring a stable and unified global internet, and until 2013, there were only 23 gTLDs available. However, through the new gTLD Program, ICANN opened up applications to vastly expand this inventory, and more than 1,300 new names will likely become available over the next few years.
The current list of available gTLDs can be seen here: https://newgtlds.icann.org/en/program-status/delegated-strings
Last reviewed: April 30, 2021