| Defining serialization formats | Really should have been implemented completely as templates, it would have been much cleaner, but support is not good enough on all platforms |
| OpenMaya - API module for common classes | |
| OpenMayaAnim - API module for animation | |
| OpenMayaFX - API module for effects | |
| OpenMayaRender - API module for rendering | |
| OpenMayaUI - API module for user interface | |
| FunctionSet classes | |
| Proxy classes | |
| Macros |