Anyone shooting .DNG with their Lumia? What editor?

So, I just got back from an awesome 4 day backpacking trip through Utah's Grand Gulch Canyon. I have some great photos I took with my Lumia 1020, but would like to play with the DNGs. I don't have Photoshop anymore. Are there any good, free editors that can open the DNGs and let me tweak white balance, saturation, etc and save as high res jpg?
Bonus points if its a 'metro' app.