If you're looking to open OBJ models without Maya, there are several alternative methods you can use. OBJ files are commonly used for 3D modeling and can be viewed and manipulated without the need for specialized software. Here are a few simple steps to open and work with OBJ models:

1. Use a free online viewer: There are several websites that offer free online 3D model viewers that support OBJ files. Simply upload your OBJ model to the website and you'll be able to view and interact with the model without the need for Maya.

2. Convert to a more common format: If you have trouble opening an OBJ file, consider converting it to a more common 3D file format such as FBX or STL. There are many free file conversion tools available online that can help you convert your OBJ file to a format that is compatible with a wider range of software.

3. Use a dedicated 3D modeling software: While Maya is a popular choice for 3D modeling, there are other software options available that can open and work with OBJ files. Blender is a free and open-source 3D modeling program that supports OBJ files, making it a great alternative to Maya for viewing and editing 3D models.

4. Check for built-in operating system support: Some operating systems have built-in support for viewing and manipulating 3D models, including OBJ files. For example, Windows 10 includes a 3D Viewer app that can open and display OBJ files without the need for additional software.

By following these simple steps, you can easily open and work with OBJ models without the need for Maya or other specialized software. Whether you're a 3D modeling professional or just starting out, having access to alternative methods for opening and viewing OBJ files can be a valuable skill for your projects.