When it comes to viewing STL files on OSX, having the right software is crucial. Whether you're a designer, engineer, or just someone who enjoys working with 3D models, having a reliable STL viewer can make a world of difference. Here are some of the best options out there:

1. Blender: While primarily known as a 3D modeling and animation software, Blender also has robust capabilities for viewing STL files. Its user-friendly interface and powerful features make it a top choice for many OSX users.

2. MeshLab: MeshLab is an open-source, cross-platform software for processing and editing 3D triangular meshes. It supports a variety of file formats, including STL, and offers advanced visualization and analysis tools.

3. FreeCAD: FreeCAD is a free and open-source parametric 3D CAD modeler. It’s perfect for creating and modifying designs, but it also has excellent support for viewing and analyzing STL files. Its intuitive interface and extensive features make it a popular choice for OSX users.

4. Cura: Originally designed for 3D printing, Cura also includes a built-in STL viewer. It’s perfect for visualizing STL files and preparing them for 3D printing. Its simple and streamlined interface makes it a great option for users who are primarily interested in 3D printing.

5. Autodesk Fusion 360: While primarily a 3D CAD, CAM, and CAE tool, Fusion 360 also offers robust capabilities for visualizing and analyzing STL files. Its cloud-based nature allows for seamless collaboration and access across multiple devices, making it a convenient choice for OSX users.

Choosing the right STL viewer for OSX ultimately comes down to your specific needs and preferences. Whether you’re looking for advanced visualization tools, 3D printing support, or seamless integration with other design software, there’s a solution out there for you. Take the time to explore the options and find the perfect STL viewer to enhance your 3D modeling experience on OSX.