First, the link http://en.wikipedia.org/wiki/List_of_game_engines#Free_.2F_open_source_engines for the game engine list on the wiki is attached.
The above has collected a wealth of 3D engines and their related feature support, which is a good reference and a good resource for me such a game cainiao.
Below is what I have accessedFreeThe game engine list is still being collected and will be updated later
Panda3d Official Website: http://www.panda3d.org/
Genesis3d Official Website: http://www.genesis3d.com/
Irrlicht engine Official Website: http://irrlicht.sourceforge.net/
SiO2 (this is a 3D game engine developed for iPhone, iPad and iPod) official http://sio2interactive.com/SIO2_Free_Open_Source_3D_Game_Engine_for_iPad,_iPhone_and_iPod_Touch/SIO2_Free_Open_Source_3D_Game_Engine_for_iPad,_iPhone_and_iPod_Touch.html
Crystal space 3D Official Website: http://www.crystalspace3d.org/main/Main_Page
3 Impact Official Website: http://www.3impact.com/