[skyfaller]

Thanks for the link, the Github repos greatly strengthen your case that we should consider this to be using open source software.

I'd just like to say that I searched their website and wasn't able to find any link to these repos. I think that open source is something that should be touted as a feature, not something hidden in shame. Perhaps their target audience doesn't care about source code, but would it kill them to mention it somewhere?

In short, I think one factor in deciding whether a product is open source is whether it is advertised as open source (and has the repos to back that up). It's harder to get collaborators and benefit from open source if nobody knows that the source code has been published.