Optimus Futures (OF), LLC. OF has a direct relationship with TradeStation and they could help you with account opening. Also, they are familiar with my programs, and will assist you technically with any issues. I have talked to Matt Zimberg, the person in charge there, many times over the years. He is a wealth of knowledge, and a generally good guy. He really wants traders to succeed!
You can reach the main broker, Matt, who will help you with all the necessary paperwork to establish an account. You can start your process here: Open Your Futures Trading Account
I use Tradestation for all my development work, and a lot of my trading. They are very good. Best of all, if you open an account with them, you can take my Strategy Factory course for free (after rebates). You can find out more about Tradestation and the rebate program here: http://www.kjtradingsystems.com/tradestation.html
I offer my KJ Diversified and KJ Diversified II programs through Striker.com, where you can auto trade them. I have been impressed with their service, their support and their ability to run my strategies for people to autotrade. You can find out more about them here: www.striker.com
You've probably seen Carley on Mad Money. She is a well respected trading figure, and a great broker also. I usually trade options through DeCarley, and I am glad I do. She is a true professional. She can be reached here: www.DeCarleyTrading.com
I use them mainly for some manual trading I do. Generally, they are very good. No real issues to speak of, and good customer service. Worth checking out, especially for options trading. www.optionsxpress.com