Manyfold now shows FreeCAD files in your self-hosted 3D library

Manyfold is an open-source, self-hosted web app for organizing and sharing 3D models, mostly print files. On 6 August 2026, FreeCAD News announced a small addition: a FreeCAD file (.FCStd) dropped onto your instance now shows its project thumbnail in the preview.1

The detail looks tiny, but it removes a real point of friction. An FCStd file is a container. Without a render, you do not know what it holds until you open it. Seeing the thumbnail first is the difference between a library you browse and a folder you dread.

The app ships as a Docker container, with instructions for NixOS, Kubernetes, Proxmox and Home Assistant add-ons.1 Under the hood it is Ruby on Rails, with THREE.js for in-browser 3D rendering and PostgreSQL in production.2 A public server runs at 3Dprint.social if you want to look around, and a demo lives at try.manyfold.app.23

Funding comes from NGI0 Entrust, an NLnet fund backed by the European Commission's Next Generation Internet programme.2 This is not a service that can quietly disappear behind a subscription.

Concretely, a maker can keep models at home, tag them, attach a clear licence and find them visually again. Nothing dramatic — exactly the kind of tool that makes self-hosting less heroic.