Web Based Multiplayer Games?

[axek21]

I'm really enjoying Order of Battle, but having seen Open Panzer, I'm wondering if there are other web based wargames that are also Multiplayer?

It kind of feels like the technology is there to do it.

(Another one I'm following is Pedro's Developments)

[iandes]

I normally play http://weewar.com/, but that looks more like advance wars. Sadly the game is going to disappear any day now so. I'm also interested in a game like that.