holy sh*t, Claude Code + these 13 free repos just built a mechanical crab that walks, snaps its claws…

holy sh*t, Claude Code + these 13 free repos just built a mechanical crab that walks, snaps its claws and falls apart into 100s of parts a grey cube goes in. a finished 3D film comes out every machine below is open source ↓ (1/13) / spec-kit by GitHub → turns your idea into a brief + shot plan (2/13) / Penpot, the open-source Figma alternative → boards, colors and fonts (3/13) / Blender MCP → lets Claude Code drive Blender for you (4/13) / Blender, the free tool behind Oscar-winning Flow → models the shell, legs and claws (5/13) / gltfjsx by Poimandres → turns the 3D file into editable React parts (6/13) / Three.js → real 3D right inside Chrome or Safari (7/13) / React Three Fiber → sets up the scene, lights and camera (8/13) / Theatre.js → keyframes every leg step, like After Effects in code (9/13) / GSAP, now 100% free thanks to Webflow → the claw snap, the bounce, the moving text (10/13) / Lottie by Airbnb → animated stickers and icons (11/13) / Tone.js →…