This post lists down the best free 3D File Viewer software for Windows 11/10 to view and analyze 3D models & STL, etc, files.

Starting with Windows 10 Preview Build 21332, which began rolling out this week, when you do a clean install of Windows 10 the Paint 3D and 3D Viewer applications won’t be included by default.

1] 3D Viewer 3D Viewer is the default 3D file viewer app that you get in Windows 10. It lets you view 3D models of different formats such as STL, FBX, GLTF, OBJ, and other files.

Windows 10 3D Viewer As a place to store all those 3D object files that Microsoft thought people would be downloading, they created a '3D Objects' folder in each user's user profile directory.