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Good STL/3D model archival software?
(lemm.ee)
If it's free and open source and it's also software, it can be discussed here. Subcommunity of Technology.
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Not sure if this van_dam might work for you. I found it randomly searching through my Unraid server's App store and it seems to be built around 3D printing files. As a note, I haven't worked with this one personally yet since I haven't had the time to get Postgres and Redis set up, but I have this pinned to come back to it. Could be worth a look!