I am trying to figure out which of these versions I want to install  
but am having a hard time fingering it out.

Are Hyperion and Hymalia both GPL or just Hyperion? If so, is there  
source for both?

 From what I have read it looks like Hyperion is GPL and scales better  
than Hymalia.

My goal is to install everything from source but I only want a fully  
GPL'ed version.

Thanks for any clarification,

Jon