http://flagshipgame.com/
Inspired by great RTS titles such as Homeworld, Sins of a Solar Empire and Total Annihilation, and incorporating the capital ship combat of sci-fi classics such as Star Trek, Babylon 5 and Battlestar Galactica, Flagship will allow you to command a fleet from the bridge of your own starship. Explore the stars, expand your territory and save humanity from being wiped out in a hostile galaxy.