The Chess Variant Pages
Website about chess variants, documenting rules and history of each listed game, with limited support for game play.
ShogiHarbour
Youtube channel for Shogi by the first professional shogi player from outside Japan.
Hidetchi
One of the oldest and most well known youtube channels for shogi with rule explanations, game commentary, and opening analysis.
Ludii
Ludii is a general game system trying to reconstruct the rules of many games, including chess variants.
Abema TV Shogi
24/7 Shogi channel of Abema TV in Japanese. Broadcasts with commentary from most major professional tournaments.
DXB website
Website of the German Xiangqi Association, e.g., having an OTB tournament calendar.