Are you in need of a reliable STP file viewer but don't want to break the bank? Look no further! We've rounded up some of the best free STP file viewer tools to help you view, analyze, and collaborate on 3D modeling and design projects.

1. FreeCAD: FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects. It's easy to use and is equipped with a wide range of features, including the ability to view STP files. This powerful tool is a favorite among 3D modeling enthusiasts and is completely free to use.

2. eDrawings Viewer: eDrawings Viewer is a free software that allows you to view, print, and review all types of eDrawings files and SolidWorks files. It supports a variety of file formats, including STP, making it a versatile option for viewing 3D models and collaborating with team members.

3. Fusion 360: While not entirely free, Fusion 360 offers a free trial version for hobbyists, startups, and students. This comprehensive tool not only allows you to view STP files but also enables you to design, simulate, and manufacture 3D models. It's a great option for those looking for a more advanced viewer with additional design capabilities.

4. A360 Viewer: A360 Viewer is a web-based viewer that allows you to view 2D and 3D files, including STP files, without the need for software installation. It's a convenient option for quick file viewing and sharing, especially when collaborating with remote team members or clients.

5. 3D-Tool Free Viewer: The 3D-Tool Free Viewer is a powerful tool for viewing 3D models and 2D drawings. It supports various file formats, including STP, and provides interactive manipulation capabilities for examining and analyzing models in detail.

Whether you're a professional designer, hobbyist, or student, having access to a reliable STP file viewer is essential for working with 3D models. These free tools offer a range of features and capabilities to help you view, analyze, and collaborate on your design projects without draining your budget.