App store for the PC?

So I've spent a lot of time开发者_如何学Python making an iPhone game and have recently realized that I don't have to limit myself to just Apple - I know there are app stores for Palm and Android, but does anybody know of a good "app store" for the plain old PC? I would like to have one where individual developers can publish an app and not have to worry about all the billing and piracy issues!

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Valve has Steam, although that's a bit of a game store. It comes with DRM so it might be what you want. http://store.steampowered.com/

From what I can see, their website has an email to coontact them about distribution and that's it. steamworks@valvesoftware.com

Stardock has Impulse, which is more of a general app store although it does have games as well. No DRM baked in, and it has a very liberal return policy. http://www.impulsedriven.com/

Impulse has a page with more info and a contact form - https://developer.impulsedriven.com/#publishing The page states the base rate is 70% which is likely more than Steam gives you.