Chess calendars and masters games

Masters games:

https://www.chessgames.com
https://old.chesstempo.com/chess-players.html
https://www.chess.com/games
https://2700chess.com/games
https://www.365chess.com/chess-games.php
https://database.chessbase.com

https://lichess.org/analysis#explorer
(make a few moves, notable games will be listed on the right box)

https://www.openingtree.com
(select "Notable chess players", or select a source + player username)

Calendars:

https://www.fide.com/calendar
https://tornelo.com/chess
https://www.chessclub.com/calendar
https://chessarena.com/tournaments

https://chess24.com/en/read/news/2021-chess-calendar
https://www.chessmix.com/chess-tournaments
https://chess-calendar.eu
https://www.chess.com/calendar
https://2700chess.com

https://lichess.org/tournament/calendar
https://lichess.org/tournament
https://lichess.org/swiss

Live & results:

https://chess-results.com
https://live.followchess.com
https://lichess.org/broadcast
https://www.chess.com/events
https://chess24.com/en/watch/live-tournaments
https://www.chessbomb.com/arena
https://live.chessbase.com
https://theweekinchess.com/live
https://www.chessgames.com/perl/newtournaments

https://en.wikipedia.org/wiki/2021_in_chess

https://www.twitch.tv/fide_chess
https://www.twitch.tv/lichessdotorg
https://www.twitch.tv/chess24
https://www.twitch.tv/chess
https://www.twitch.tv/stlchessclub

https://lichess.org/streamer

https://www.twitch.tv/directory/game/Chess
https://www.twitchmetrics.net/channels/viewership?game=Chess

https://www.youtube.com/results?search_query=chess&sp=EgJAAQ%253D%253D
https://playboard.co/search?q=chess