Edited versions of some of the scripts which shipped with Poser 5 were being posted to this forum a couple of years ago.  That's precedent, at least, but I don't know that it really establishes whether such redistribution is deemed acceptable by Renderosity or eFrontier.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.