Searching for a 3d engine. (Mac, cocoa)

What 3d engines are avaliable for mac to use with cocoa? (xcode)?? A list of all would be great + a recommend

Thank you very mu开发者_如何学运维ch :)

EDIT: In OpenGL. There is a 2d engine which uses opengl but i need a 3d engine for physics simulation in OpenGL. (shoot'em up)

Galaxy Engine meets all your requirements - Cocoa, 3D and OpenGL - and is free and open source.

http://code.google.com/p/galaxyengine/

EDIT: I read your edit and saw that you need physics as well. Bullet works well with Galaxy Engine, which unfortunately is lacking a physics model of its own: http://bulletphysics.org/wordpress/

A simple answer for a simple question: OpenGL.