Are you in need of a reliable STP file viewer but don't want to download any software? We've got you covered with the best free online STP file viewers available. Whether you are a professional CAD designer or just need to view a 3D model, these online tools are perfect for you.

1. A360 Viewer: Autodesk's A360 Viewer is a powerful online tool for viewing CAD files, including STP files. It's user-friendly and supports a wide range of file formats, making it a great choice for professionals and beginners alike.

2. Online 3D Viewer: This simple and easy-to-use online viewer supports STP files and a variety of other 3D file formats. It's perfect for quick and easy viewing without the need for any downloads or installations.

3. ShareCAD: ShareCAD offers a free online STP file viewer that allows you to view, share, and collaborate on 3D models. It's a great option for teams working on CAD projects remotely.

4. 3DViewerOnline: This online viewer is great for viewing STP files as well as other 3D file formats. It provides a clean and intuitive interface for easy navigation and viewing.

5. Glovius: Glovius offers a free online STP file viewer with advanced features for analyzing and working with 3D models. It's perfect for professionals who need more than just basic viewing capabilities.

With these free online STP file viewers, you can easily view, share, and collaborate on 3D models without the need for any software downloads. Whether you're a CAD professional or just need to view a 3D model, these tools have got you covered. Say goodbye to the hassle of downloading and installing software – try out these online STP file viewers today!