Are you in need of a free STP file viewer to open and view your CAD models? Look no further! Here are the top options for viewing STP files without spending a penny.

1. FreeCAD: This open-source parametric 3D CAD modeler is perfect for viewing and editing STP files. With its intuitive interface and robust features, FreeCAD is a popular choice among designers and engineers.

2. eDrawings Viewer: Developed by SolidWorks, eDrawings Viewer is a powerful tool for viewing, printing, and reviewing STP files. It offers a user-friendly interface with various viewing options and measurement tools.

3. Autodesk Viewer: Autodesk offers a free online viewer that supports STP files along with various other CAD formats. It is a convenient web-based tool for viewing, sharing, and collaborating on 3D designs.

4. A360 Viewer: Another free web-based solution from Autodesk, A360 Viewer allows you to view and share STP files without the need for any software installation. It offers a streamlined user interface and supports multiple file formats.

5. SolidView/Lite: This lightweight version of SolidView is a free STP file viewer with basic viewing and markup capabilities. It is a simple yet effective tool for users who only need to view and print STP files.

These free STP file viewers provide a range of features and capabilities, making them suitable for different use cases. Whether you're a professional designer or a hobbyist, there's a free STP file viewer out there to meet your needs. Say goodbye to expensive software and start viewing your CAD models for free today!