I've been wanting to suggest Joost Egelie for a while. He's a Berlin-school-type progressive electronic composer, and he's got three albums for free download, a special edition version of one of the albums available for purchase, and a weird random 8-bit tune. It's good stuff.
Also, Just Like Vinyl is a crossover prog group formed by the guitarist and vocalist of The Fall of Troy after the bands' dissolving. They aren't signed, but they have dropped their debut which was self-produced and can be purchased online from multiple sources, such as iTunes or reverbnation.
I just thought I'd mention these two, because they seem musical enough for my fellow prog fans to enjoy and possibly add to this site.
Enjoy!