STL

This software provides a variety of free viewers for different formats including IGS, IGES, STL, STEP, OBJ, LAS, DWG, DXF, IFC, IFCZIP, 3DS, and LUS. It allows users to view and explore 3D models without any cost or software installation.

This CAD software supports a wide range of file formats including AutoCAD DWG, DXF, PLT, SVG, CGM, STEP, IGES, STL, and more. It comes with editing tools, a PDF to DWG converter, 2D/3D measuring capabilities, markup options, and G-code generation directly from CAD files.

STL Viewer is user-friendly software that can view, measure, convert, and print 3D formats, including STL, STP/STEP, IGS/IGES, SAT, and BREP. It is a professional tool for simplifying 3D modeling needs, while providing a user-friendly interface.

This ASP.NET control allows viewing of CAD, 3D, vector and raster files in web browsers, SharePoint, and Office without the need for AutoCAD installation. It supports multiple file formats and archives.

Bmp2Cnc is a software that transforms digital images into 3D G-code, producing ISO toolpaths for various CNC machines. It supports flat, spherical, and conical tools and includes a postprocessor for numerous CNC controllers.

MeshMagic 3D is a user-friendly software for viewing and editing STL files. It allows for seamless importing of STL files created with CAD software, followed by easy to use mesh editing tools like rotating and rescaling the meshes.

The Spin 3D Mesh Converter can transform 3D file formats, including STL, 3DP, 3MF, OBJ, and PLY in one easy software.

Sharecad.org is a cross-platform web-based service for viewing drawings. It supports various formats, including DWG, DXF, and STL, making it accessible on Windows, OS X, Linux, Android, iOS, and Windows Phone.