Free and open-source digital sculpting software positioned as a ZBrush alternative (native for Windows, macOS, and Linux), featuring two built-in AI capabilities: Brush Lab, which generates brushes from a single text description, and image-to/text-to 3D, which converts sketches, concept art, or text into sculptable 3D models.
Star count 456 (+82 / 24h)
Reasons
- Brush Lab: Describe "cracked mud" or "layered dragon scales," then say "sharper," and the AI generates brush recipes (data, not code), with sliders for every parameter; free by default, using the open-source GPT-OSS 20B model hosted by Pollinations.ai, switching to local Ollama when offline, or connecting to Claude or any OpenAI-compatible interface
- Image-to/text-to 3D: Free options include official Hugging Face demos for Hunyuan3D 2 / 2.1, TRELLIS.2, and Stable Fast 3D, or connect your own ComfyUI workflows (including ready-made Hunyuan3D 2.1 workflows); paid keys for fal.ai and Meshy are also supported; additionally, the ComfyUI-SculptForge node package brings retopology, decimation, LOD, and export into ComfyUI
- Designed for game and animation pipelines: One-click LOD, blend shapes, Send to Unreal, bidirectional Blender bridge, GoZ format for ZBrush exchange, and Gaussian splatting import to mesh; includes an MCP server (sculptforge-cli --mcp) allowing agents like Claude Code to directly sculpt, convert, and export
Usage
- Download the Windows installer, macOS dmg, or Linux AppImage from Releases; alternatively, use the one-line installation script in the README
- Command-line examples: sculptforge-cli -c 'image_to_3d path=hero.png; export_usd path=hero.usdz'; sculptforge-cli -c 'brush_ai prompt="weathered stone edges"; brush_save path=stone.sfbrush'
- Connect to an agent: claude mcp add sculptforge -- /path/to/sculptforge-cli --mcp
Risks
- The author states it is in an early version (v0.8); installers are not yet code-signed, so the system may block them on first launch; the author notes that the real-time bridge with ZBrush has not been tested against a running instance of ZBrush
- Free AI features send prompts or images to third-party services (Pollinations.ai, Hugging Face demo spaces), and licenses for generated models vary (see docs/ai-services.md); the software is licensed under GPL-3.0, and the repository was created on 10/21