Are you struggling to open STP files without expensive software? Look no further! Here are some top recommendations for free software that will make opening STP files a breeze. Whether you're a professional engineer, a student, or just curious about 3D modeling, these tools are perfect for you.

1. FreeCAD: This open-source parametric 3D CAD modeler is perfect for creating and editing STP files. It's user-friendly and offers advanced features for all your 3D modeling needs.

2. 3DViewer Online: This web-based tool allows you to upload and view STP files without any hassle. It's perfect for quick access and easy sharing of your 3D models.

3. eDrawings Viewer: This free software from Solidworks is great for viewing, printing, and reviewing STP files. It also supports other 3D file formats, making it a versatile tool for all your visualization needs.

4. Autodesk Viewer: With this online tool, you can view and share STP files directly in your web browser. It's great for collaboration and works seamlessly with other Autodesk software.

5. Onshape: This full-featured CAD software offers a free plan for non-commercial use, giving you access to powerful tools for creating and editing STP files.

Now that you have these recommendations, opening STP files for free is easier than ever. Say goodbye to expensive software and hello to these user-friendly, accessible tools. Whether you're a professional or a hobbyist, there's something for everyone. Try them out and start exploring the world of 3D modeling today!