Any window from your Mac, live on your iPhone or iPad. Touch, Apple Pencil, trackpad and keys. Free, open source, no servers.
Open-source vector design tool with an AI prompt-to-canvas workflow, concurrent agent teams, an MCP server, and JSON-based .op design files.
AI-native design editor. Open-source Figma alternative.
:video_game: :pencil: A list of Game Development resources to make magic happen.
:pencil: A markup-aware linter for prose built with speed and extensibility in mind.
Frontend content editing for AI-built WordPress themes.
Claude paints with code: a Claude Code skill for procedural illustration in 74 styles, from ink wash (水墨), watercolour and ukiyo-e to stained glass, Roman mosaic, Art Deco, shadow puppets, X-ray, VHS tape, pastel UI, dry-brush blocks, hatched nocturnes, a note-app UI and Flexoki paper. No image model: numpy + Pillow on a CPU, draw-on GIFs.
Codex plugin for OpenPencil — an interactive Rust/WASM canvas for AI-assisted UI design. Create editable .op files from prompts, refine selected elements, generate image assets, and install with one prompt on macOS, Windows, and Linux.
Pencil2D is an easy, intuitive tool to make 2D hand-drawn animations. Pencil2D is open source and cross-platform.
The DeepSeek Harness plugin for OpenPencil — preview, inspect, and edit real .op documents inside a conversation.
文具盒 · hand-built drawing skills (crayon, pen & wash) by 盏 & North — every stroke drawn in Python, no filters, no image generation
Freehand pencil icons
Blenderで3Dモデルから線画を自動生成するアドオン(塗り分け法の前処理を自動化)
Age of Empires II: Definitive Edition, native on iPad. Your own Steam copy with touch, Apple Pencil and keyboard controls, Steam on the iPad, no streaming.
The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.