[brightlancer]

> It's not just "freeware" when you can see, modify, sell and redistribute under the same licence. It's open source.

As the author described it, you could _not_ sell it:

"This license allows Isotope to be used in personal or open source projects for free."

It turns out that the author was incorrect about Isotope because their software is GPL, but what they were proposing was not open source:

"There are no Pro versions, no license keys and there’s nothing else to maintain. Individual developers enjoy the same tool for free, while companies pay a reasonable price."

[robertlagrant]

Sure, but that's not the case? It was already mentioned in this thread that it was dual-licenced GPLv3.