What is an IGS file?
IGS or IGES is an acronym for Initial Graphics Exchange Specification with file format .igs or .iges. It is neutral file format typically used to exchange 2D or 3D design information between Computer-Aided Design (CAD) softwares.
How to open IGS file?
IGES file can be opened and viewed using the 3D Usher IGS file viewer. 3D Usher free igsviewer requires no downloads or registering of accounts.
Alternatively, you can use a large number of free and commercially available CAD softwares to open the files. This however, would require downloading, installation and the system would have to meet the system requirements.