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You could try http://playingcards.io/

It's effectively a 52 card sandbox. You can also invite other players with a unique URL. Each player has their own "hand" private to others.

The controls seems a tad clunky but it should work for just about any card game!

The best ones I've played on are

https://www.pokernow.club/ - Poker

https://www.trickstercards.com/ - including Spades, Bridge, Hearts

https://ba.net/poker/live/

https://truco.ba.net for truco or spanish card games

I haven't found anything yet, but if I do I'll add it to the article.

http://kosmi.io/

I spent a good portion of my day searching for this yesterday (everything looks very shady). What i really want is a self hosted option but i have not found anything yet.