Voxel Editing Program

I would like to request some sort of Voxel art program like MagicaVoxel (https://ephtracy.github.io/) that allows creation and rendering of Voxel graphics.

I use PortableApps for all of my graphics and image-editing work. It is wonderful that I can take it anywhere with a computer and get right back to work wherever I am at! Would be absolutely wonderful if we could incorporate this as well.

Would be great if we could make Unity Portable too!

Thank You!