I believe Cobra is correct. But that said -- iFly is definitely written to be very portable.... we run on 4 platforms now with 98% the same code. It's possible that we could run on Linux too without too much work. However, I have a feeling that Linux has been left-behind, and may have notable deficiencies and nuances that may prevent us from supporting it. And as Cobra mentioned, there would also need to be a trend of users actually WANTING Linux support.