Pre-existing voxel tools/libraries

I want to do some development which requires manipulating and rendering voxel data. My interest is more in the project its self, rather then things like working out rendering optimization techniques, which I know have been done a billion times by other people.

However, all the existing libraries I can find seem to be for other languages. I have found PolyVox, which seems great, but that’s in C++. Are there any fleshed out libraries?

If there are none, I’m assuming I’m stuck using LWJGL and building something from scratch?

Thanks so much for all the help!