Horde3D

I think it's a good thing,but just lacks of document and demos,does it support character control?

I agree, but I personally haven't tried it at all, so I guess you have to try to ask the PAL developer Adrian Boeing for a better documentation.

Thanks,sorry for the bothering above;
And I 've post a topic on PAL's forum before, but it seems nobody there many days so I wrote this topic;No more words now,just hope physics engines will be same "blossom" as graphics engines for newbies.Irrlicht's physics wrappers are also developing.

You already know the bullet integration (in the GameEngine)? It hasn't been updated to Beta4 yet, but it shouldn't be too much work.

PAL is a good idea but development seems to have stopped and it only provides the most basic of abstractions. After evaluating it for a project i decided to drop it and go with a native integration of the physics engine. Ultimately it's less work to pick a good engine and fully integrate it into the engine.

Or go with Bullet, it's a great physics engine, and like Volker pointed out bullet is already integrated.