This site allows you to share scripts at several levels depending on your goals. You can share script source code with others, allow them to download your creations as a 3d printable model, or allow them to purchase through Shapeways. When printing at Shapeways, you can add markup to the price.
We are providing ShapeJS as a hosted solution by Shapeways, so unfortunately, there are no real plans (yet) for any self-hosting. While you might see that as a limitation, let me give some context:
Are you trying to say my user interface is bad? Well we agree, it's rough and could be so much better. Ideally we want to let you develop a creator quickly with a small team. The autogeneated interface lets people interact with it quickly amd we will improve this over time.
We are also working on an interface to allow you to code your own user interface and just use ShapeJS as the geometry creation, fixing and viewing platform. More details to come on this
Creator authors can decide if the output of their creator can be downloaded for home usage. Our goal is to make creating customized products fun and easy so we hope people do want to share.
We're happy to help! Please use the ShapeJS Forum to ask your question.