having "[...] open source [...]" in your tag line, for a closed source project, is a bit disingenuous. "Project A has beneficial aspect X, we forked project A'

having "[...] open source [...]" in your tag line, for a closed source project, is a bit disingenuous. "Project A has beneficial aspect X, we forked project A's work and removed X, but we just thought we should mention that it used to have aspect X, which is cool!" ick.