I created USA-Legal-Casinos in 2013 because it is clearly not easy to find an online casino that accepts US players and has no predatory terms and conditions. If you are a US gambler, I am sure you will like it!
Gambling in the US in the serious topic. Wikipedia will give you a broader overview of what is going on there but to summarize, the whole situation is a little bit confusing. Some casinos operators pretend that their activities are legal in the US but we saw what happened in 2010 with the "Black Friday". The "Black Friday" is the day when Pokerstars.com and FullTiltPoker.com were seized and that its founders were taken to court.
Find Below the listing of all online casinos that are currently accepting US players. These online casino are essentially powered by Top Game and Real Time Gaming Software.
Most casino softwares (the best) do not accept US Players for now. Indeed, if you check their current terms and conditions, Playtech, Microgaming, and Netent do not accept players from the USA.