The best open source alternative to Sketchfab is Akse. If that doesn't suit you, our users have ranked more than 50 alternatives to Sketchfab and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Sketchfab are MediaGoblin, Online 3D Viewer, Manyfold and SEA3D.
Primitive-based 3D modeling provides kids and teens with shape building, 2D blueprint editing, and freehand drawing, supporting boolean holes, 3D text, precise manipulation, and STL import/export with snapping for direct 3D printing in a backend-agnostic, open source web app.
Norway
MediaGoblin is a free software media publishing platform that anyone can run. You can think of it as a decentralized alternative to Flickr, YouTube, SoundCloud, etc.
United States
Online 3D Viewer is an engine to visualize 3D models online.
Manyfold is an open source, self-hosted web application for managing a collection of 3d models, particularly focused on 3d printing.
Art of Illusion is a free, open source 3D modelling and rendering studio. It is written entirely in Java, and should be usable on any Java Virtual Machine which is compatible with Java 5 or later.
United States
DeleD is a 3D modeler and level-editor combined into one. It focuses at game development and is specifically designed to create static objects/worlds. Other areas in which you can put DeleD to good use are, for example, educational services, webdesign, prototyping and image...
Netherlands
EU
Based on the F3D library that supports many file formats, from digital content to scientific datasets including glTF, USD, STL, STEP, PLY, OBJ, FBX, Alembic and many more. Drag and drop 3d models into the app and export an image of the 3d model.
Fragmentarium is an open source, cross-platform IDE for exploring pixel based graphics on the GPU.
DenmarkEU
OpenFX is an open-source, free modeling and animation studio, distributed under the GNU General Public License.
K-3D is free-as-in-freedom 3D modeling and animation software. It features a plugin-oriented procedural engine for all of its content, making K-3D a very versatile and powerful package.
The Grit Game Engine is an MIT-Licensed Open Source Game Engine that is highly scriptable via Lua. It supports huge open world maps and dynamically streams assets from disk. The Grit Game Engine is a community project to build a free game engine (and toolchain) for implementing...
