VoxPie

With VoxPie creating a 3d model is easier than drawing in MS Paint. Geared towards indie game devs, it lets you easily paint 3d models with a mouse like you paint physical action figures. Create 3d props from existing pixel art, height maps and 2d shapes! Up to 27,000,000,000 voxels on screen allow for detailed models. Yet also supports editing smaller scale models made from very few voxels. Export voxel files as 3dsMax and Blender readable meshes. Supports several orthogonal projections without a need to define cameras, including isometric and the oblique projection from RPG Maker.