When it comes to viewing STP files, having the right tool can make all the difference. Whether you're an engineer, designer, or simply need to view 3D models in STP format, having a reliable and free STP file viewer is essential. To help you find the best solution, we've rounded up the top 5 free STP file viewer tools that you need to know.

1. FreeCAD: FreeCAD is a popular open-source parametric 3D CAD modeler that comes with a built-in STP file viewer. It's a versatile tool that allows you to not only view STP files but also modify and analyze 3D models.

2. eDrawings Viewer: Developed by SOLIDWORKS, eDrawings Viewer is a free STP file viewer that offers a user-friendly interface for viewing and sharing STP files. It supports various 3D file formats, making it a versatile option for designers and engineers.

3. A360 Viewer: A360 Viewer is an online STP file viewer that allows you to view 3D models directly in your web browser. It's a convenient option for quick viewing and sharing of STP files without the need to install any software.

4. Autodesk Viewer: Autodesk Viewer is another online tool that supports STP files as well as various other 3D file formats. With its powerful viewing capabilities, it's a great choice for anyone who needs to view and collaborate on 3D models.

5. 3D-Tool Free Viewer: 3D-Tool Free Viewer is a lightweight STP file viewer that offers basic viewing and measuring functions for 3D models. It's a simple yet effective tool for quickly checking STP files without any complex features.

With these top 5 free STP file viewer tools, you can easily view, analyze, and collaborate on STP files without breaking the bank. Whether you prefer a desktop software or an online solution, there's a free STP file viewer that's right for you.