Blockhammer vs Voxel Builder

Blockhammer is a free voxel editor for building scenes from cubic blocks, available for macOS, Windows, and Linux. Its modeling tools include layers, named objects, precise position and size controls, reversible effects, and undo. Painting works on block faces at sixteen times the blocks’ resolution and supports text, images, glass, metal, and glowing paint. Blockhammer imports and exports MagicaVoxel .vox files, and exports .glb, .obj, Minecraft .schem, and image or animation formats. Export destinations named by the maker include Unity, Unreal, Godot, Blender, Minecraft, and Teardown. The maker reports rendering a 113-million-block scene and testing scenes beyond one billion blocks. The editor autosaves every minute and can recover work after a crash. Scenes and files remain on the user's machine, and no account is required. Crash reports may include errors, recent activity, and graphics hardware details; reporting can be disabled. Optional AI texture generation is off by default and uses the image API configured with the user's own key. The software is in active development, so features may change.

Voxel Builder is a voxel-based 3D modeling application for creating and editing voxel scenes. It includes terrain, cube, sphere and isometric generators, alongside interactive modeling, symmetric drawing and painting, transforms and color groups. Rendering tools include a Three.js sandbox, GPU path tracer, basic PBR rendering and post-process effects. The app can voxelize GLB, OBJ, STL and PLY models, as well as images and Unicode or emoji text. It saves and loads JSON and MagicaVoxel VOX files, and exports GLB, GLTF, OBJ, STL and PLY. Local storage, snapshots, quicksave, undo and redo are available, with snapshot backups shareable in ZIP archives. A Blender importer script is included, and baked GLB meshes can be used with Blender and other 3D software. The project describes the app as portable and usable online or offline, with no ads, trackers or logging; its code is GPL-3.0. Browser use is supported on desktop and mobile, and Electron downloads are listed for Linux x64 and Windows x64.