I don't know if it still exists but there was one that was built on top of blender that was easier to use.

Crocotile3D is not as easy to use as it seems, the dude who makes it is an artist who is very specialized in using their own tools - they have their own pixel art tool too.

The other tools that have somewhat similar spirit are the voxel ones and the ones that are using stacking sprite as main way to create things.