If you play International Chess, check out Gameknot.
Games on Gameknot typically take a while to complete as its focus is not on immediate/interactive games. Time controls defaults to 3 days a move. However, if both players are online at the same time, things can move much faster.
Gameknot has a nice interface and features, and usually is easy to join or start a game.
Paid membership subscription is available with extra features but non-paying members, like me, have lots of features available as well, I don’t even make use of all of them!
My user id there is zhiqian, challenge me to a game today!
