There is work in progress for automated options trading and backtesting: http://manual.zorro-project.com/new.htm, see section "Planned for future Zorro versions": Special functions for trading options and futures (in development).
Lightspeed Trader, Sterling Trader,Real Tick, Silexx OEMS and WEX all offer APIs and for low latency clients we offer our Lightspeed Gateway solution. https://www.lightspeed.com/automated-trading/
I called them for my IRA account. Unfortunately it looks like they don't allow trading certain strategies such as vertical option spreads in IRA's while IB does. That's too bad since I was looking to move my IRA out of IB, and Lightspeed looked like a great alternative.