This is a page where I have tried to collate a list of places where you can play various card games either online with others or offline against bots.
This list is not meant to be exhaustive. It is more a list of places that are either the only place where you can play such a game, or have a good amount of options, or are just generally well implemented.
The list is mostly sorted by the website or publisher, but this is not always the case when there more one-off apps which I have tried to group in broad categories.