List of Websites to search for Chess Tournaments

Below are the list of websites which listed tournaments in various part of the world, or worldwide :
Free and no registration needed.

Claimed to be the World Biggest Chess tournement calendar, Chess Tournament Calendar

https://chess-calendar.eu/

Fide - Other Tournaments :

https://www.fide.com/calendar/tournaments.html

All year chess :

http://www.allyearchess.com/search-chess-tournament.php

Info64

https://info64.org/search?name=&city=&arbiter=&ttype=2&status=1

Vesus :

http://vesus.org/search/tournaments/