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Possibly Akira?
As far as I know, it's possible to install Penpot locally via Docker and the libraries currently offered seem adequate to give you a start at least (though not sure what you're looking for in specific). Other than that, yeah the FOSS world suffers from the lack of industry-level designing software, be it raster/vector graphics editing, UI/UX prototyping, music / video production etc.
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Hence, a higher number means a more popular project.