Are you in need of a reliable and free step file viewer to help you open and view your CAD designs? Look no further! In this article, we've compiled a list of the best free step file viewers available in 2021 to make your search easier.

1. FreeCAD: FreeCAD is a powerful open-source parametric 3D CAD modeler that comes with a built-in step file viewer. It's a great choice for individuals and small businesses looking for a free and versatile solution.

2. eDrawings Viewer: eDrawings Viewer is a free 3D viewing tool from SOLIDWORKS that supports viewing, measuring, and marking up step files. It's a user-friendly option for those working with various CAD file formats.

3. A360 Viewer: A360 Viewer is a web-based tool that allows you to view and share 2D and 3D designs from any device. It supports a wide range of file formats, including step files, making it a convenient choice for collaboration.

4. Autodesk Viewer: Autodesk Viewer is a free online viewer that supports step files along with over 50 other file formats. It's a versatile tool for visualizing and reviewing designs without the need for any software installation.

5. 3D-Tool Free Viewer: 3D-Tool Free Viewer is a simple and intuitive tool for viewing, measuring, and analyzing step files. It offers essential features for inspecting 3D models, making it suitable for both professionals and hobbyists.

Whether you're a CAD designer, engineer, or hobbyist, having access to a reliable step file viewer is crucial for reviewing and analyzing your designs. With these free options, you can easily open, inspect, and collaborate on step files without breaking the bank. Give them a try and find the perfect one that fits your needs!