> It's more like the notion of open source, where the source may be viewable but isn't necessarily available for redistribution. That's incorrect: open source

> It's more like the notion of open source, where the source may be viewable but isn't necessarily available for redistribution. That's incorrect: open source software is necessarily available for redistribution. What you are referring to (source viewable but not necessarily available for redistribution/modification) is commonly referred as "source available" software [0]. Now, the distinction between open source and free software is more a social/political one rather than a practical one. Free software encompasses an entire philosophy while open source is simply concerned with software licensing. [0] https://en.wikipedia.org/wiki/Source-available_software https://en.wikipedia.org/wiki/Source-available_software