[raesene6]

As InTheArena says, both Docker EE and Openshift have Open source cores and then supply commercial support and additions to suppplement them.

It's a pretty common model amongst these companies, and hey they've got to make money somehow :)

[smarterclayton]

Everything in openshift is open source at https://github.com/openshift/origin. The commercial version is long term support, security response and errata, and the stability around that. There's nothing that is withheld from the open source project. It is not open core.

Edit: I forgot, the logo is not open source. So the logo is withheld :)

[SEJeff]

Its surprising how many people don't realize this!