openpencil

Shows active maintenance signals

macOS (Homebrew):

brew tap zseven-w/openpencil
brew install --cask openpencil

Windows (Scoop):

scoop bucket add openpencil https://github.com/zseven-w/scoop-openpencil
scoop install openpencil

Linux / Windows direct download: GitHub Releases — .exe (Windows), .AppImage / .deb (Linux)

CLI (op):

brew install zseven-w/openpencil/op

Or use the install script (macOS / Linux):

curl -fsSL https://raw.githubusercontent.com/ZSeven-W/openpencil/main/scripts/install-op.sh | bash

To allow the newest pre-release:

curl -fsSL https://raw.githubusercontent.com/ZSeven-W/openpencil/main/scripts/install-op.sh | OP_PRERELEASE=1 bash

Windows PowerShell:

irm https://raw.githubusercontent.com/ZSeven-W/openpencil/main/scripts/install-op.ps1 | iex

To allow the newest pre-release:

$env:OP_PRERELEASE = "1"; irm https://raw.githubusercontent.com/ZSeven-W/openpencil/main/scripts/install-op.ps1 | iex

Canvas & Drawing

• Infinite canvas with pan, zoom, smart alignment guides, and snapping
• Rectangle, Ellipse, Line, Polygon, Pen (Bezier), Frame, Text
• Boolean operations — union, subtract, intersect with contextual toolbar
• Icon picker (Iconify) and image import (PNG/JPEG/SVG/WebP/GIF)
• Auto-layout — vertical/horizontal with gap, padding, justify, align
• Multi-page documents with tab navigation

Design System

• Design variables — color, number, string tokens with $variable references
• Multi-theme support — multiple axes, each with variants (Light/Dark, Compact/Comfortable)
• Component system — reusable components with instances and overrides
• CSS sync — auto-generated custom properties, var(--name) in code output
• Reusable UIKits — import/export component kits from .pen files

AI & Agents

• Prompt-to-canvas with streaming generation and orchestrator-driven spatial decomposition
• Concurrent Agent Teams — multiple designers work on different sections in parallel with per-member canvas indicators
• Layered workflow — design_skeleton → design_content → design_refine with focused prompts per phase
• Style Guides — 50+ built-in styles (glassmorphism, brutalist, retro, etc.) with tag-based fuzzy matching, wired into planning and generation
• Multi-model capability profiles — auto-adapts thinking mode, effort, and prompt shape per model tier
• Built-in Rust agent runtime + Anthropic, Claude Agent SDK, OpenCode, Codex, Copilot, Gemini providers
• Anthropic-format passthrough for Chinese LLM providers — Kimi, Zhipu, GLM, DouBao, Ark, Bailian/DashScope, ModelScope, Coding Plans

Git Integration

• Clone wizard with SSH / HTTPS auth and SSH key management
• Branch picker — create, switch, delete, merge, all from the git panel
• Pull / push cascades with auth retry and non-fast-forward handling
• Folder-mode three-way merge with on-disk MERGE_HEAD state tracking

Export

• Canvas export — PNG, JPEG, WEBP, PDF (Cmd+Shift+P)
• Code export — React + Tailwind, HTML + CSS, Vue, Svelte, Flutter, SwiftUI, Jetpack Compose, React Native
• Incremental MCP codegen pipeline — codegen_plan, codegen_submit_chunk, codegen_assemble, codegen_clean

Figma Import

• Import .fig files with layout, fills, strokes, effects, text, images, and vectors preserved

Desktop App

• Native macOS, Windows, and Linux — a single self-contained binary (winit + GPU Skia, no Electron)
• .op file association — double-click to open, single-instance lock
• Background update check against GitHub Releases
• Native application menu with Save As, Open Recent, and an unsaved-changes dialog on close
• Recent files persistence

🛡️ Design System Kit

Manage reusable UIKits with style switching and component composition. Import/export kits from .pen files. Built-in registry with MCP tools for external access.