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My Favorite Open Source STL Viewer Software For Windows:įreeCAD is my favorite software because it offers all the essential 3D model viewing tools. Go through the list to know more about these viewers. These software also contain additional features that may come in handy such as macro recording, screenshot, plugin support, etc. Apart from 3D model viewing tools, you also get a lot of 3D model editing tools in these viewers that you can use to make modifications to a model. Some viewers also offer wireframe feature to view the main structure of a 3D model. In some viewers, you can also find various viewing modes such as orthographic view, perspective view, parallel view, top view, bottom view, etc. To view 3D models, each of these software offer orientation (to view a model from all angles), rotate, pan, and zoom (to closely analyze a model) tools. In these viewers, you can easily view 3D models of STL and popular 3D/ 2D file formats such as OBJ, STEP, DAE, DXF, DWG, PLY, etc. As these are open source viewers, thus you can also download and modify the source code of these software without any restrictions. These let you view and analyze STL files with multiple view tools. Although, if you want open source STL viewers, then you can use this list that contains multiple open source STL viewers. To view STL files, you can find many STL file viewer software. STL or Stereolithography is a free 3D CAD file format that carries 3D models and designs.

Here is a list of best free open source STL viewer software for Windows.
