Hey Mark -

Good to see you here:

Richard Gaskin wrote (UR-List):
But it's an open source project now

Where are the details on the license of MetaCard posted?

Right in the IDE -- see Help->Licensing

I'm confused about RunRev and this open source relationship.

Yeah, many folks are. The unnecessary complexity of some open source licenses tend to confuse and frighten people. :)

With xTalks like Rev and SuperCard, where the engine is powerful enough to write its own authoring environment in, there's a distinction between the IDE and the underlying engine that drives it. The IDE is just a collection of stacks, not much difference than anything else you can make with the engine.

As noted in the Licensing window within the product, the IDE is governed by the X11 license, while the engine remains proprietary under Rev's commercial license.

The principle of recognizing a given application (such as the MC IDE) as distinct from the APIs it uses (the Rev engine) is pretty much how all open source software exists on proprietary systems like OS X and Windows. Such open source wares are dependent on proprietary underlying technologies, yet are readily recognized as open source without the confusion sometimes associated with MC.

I'm open to suggestions on how to communicate this simplicity more effectively, but the frequency of such questions throughout the open source world suggest the root of the problem lies with the unnecessary complexity of "forced freedom" licenses like the GPL.

As much as I admire Richard Stallman, after speaking with him on this I'm confident that it's not going to change anytime soon. Even with more truly open license options like CopyLeft, X11, and public domain, because the GPL gets so much attention it will likely drive such conversations for a long time coming.

Is the only open source part for the Linux platform?

The "only part" is the whole enchilada of the MC IDE, everything but the engine needed to run it. It was done to foster community-driven maintenance and growth, not out of conformance with any licensing trends in the Linux world.

--
 Richard Gaskin
 Managing Editor, revJournal
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