Are you tired of struggling to find a way to open STP files without spending a fortune on software? Well, look no further! We've got you covered with these free software options that will make opening and viewing STP files a breeze.

1. FreeCAD: This open-source parametric 3D CAD modeler is a great option for opening STP files. It's user-friendly and allows you to modify the design with ease. Plus, it's completely free to use!

2. Open 3D Model Viewer: This software supports a variety of file formats, including STP files. It's a lightweight and easy-to-use tool for viewing 3D models, perfect for those who just need a simple way to open and view STP files.

3. eDrawings Viewer: Developed by SOLIDWORKS, this viewer allows you to open and view STP files as well as other 3D file formats. It's a versatile and user-friendly tool that won't cost you a penny.

4. 3D-Tool Free Viewer: With this software, you can open and view STP files as well as other 3D file formats. It's a simple and efficient tool for anyone who needs to access and view 3D models without any hassle.

5. Autodesk Viewer: This web-based viewer supports STP files and allows you to view and interact with 3D models on any device. It's a convenient and free option for opening STP files without the need for any additional software installation.

So, there you have it! Say goodbye to expensive software and hello to these free options for opening and viewing STP files. With these tools, you'll be able to access and explore 3D models without breaking the bank. Give them a try and see which one works best for you!