
Onshape
Blender
Sculptris
FreeCAD
meshmixer
SketchUp
ShapeShop
Sketchfab
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
Onshape
SourceForgeBlender - Blender is the open source, cross platform suite of tools for 3D creation.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Sculptris - Sculptris: Enter a world of digital art without barriers.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
FreeCAD - An open-source parametric 3D modeler
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.