Do you perhaps know one that has more games in a client? Like blackjack, poker, roulette, etc. rather than just one game?
playtodos.com is a casino which is only available as a software. And it does have BJ, roulette and other slot games AFAIK.
Betcoin.ag has a software version too (I think) .
swcpoker.eu is a poker room and it is only available as a software.
I am sure there are others but I can't think of any more right now, will update this if something came up but may I ask why you want to only play with downloadable clients? I for one prefer the games which can be played in browser since I don't trust these programs and what might they contain hidden in them.
