I have a 3d application written in C# and MDX. Now I'd like to port it to MacOSX. I look for many libraries/engines for the best possibility to port. Personally I like Irrlicht very much for its clear API usage, nice documents/tutorials, and stable implementations. It's just too sad that Irrlicht.NET does not support Mono. Therefore, I'm planning to use Mono with Tao Framework. Wrap up (ouch!) Tao.OpenGL to substitute for MDX. Use Tao.GLFW for Mac window handling and input polling. Use OpenAL or SDL to substitute for DSound. Are those substitutes feasible and stable enough? Please correct me if I was wrong or miss something. One additional question: Once I compile all source files to get an EXE with Mono's mcs.exe, is it already executable in MacOSX with all dependent DLLs?