Question Most open stick?

Hi, are any of the sticks available open? By open I mean the licencing so they can run Linux without issues (And able to use everything)

I would like to be able to develop somethings I have been doing with a Raspberry Pi and see if an open Android stick would be better as they have much paster chips and much more memory to play around with.

I could see these sticks being able to run a nice Ubuntu or Debian system if it was worked on.

Anyway, any tips on the best stick? Or do you know of any in development?

Thanks in advance.