Outlin

Wireframe at the speed of thought.
A fast, local-first wireframing tool for modern interfaces — sketch, prototype and hand off product ideas before a single pixel is polished.

Website · Live demo · Download · Releases

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Features

• Infinite canvas with frames, layers and smart guides
• Drag-and-drop UI library — buttons, inputs, navbars, text blocks and more
• Frames as containers — drag elements in and out, auto-nested layers
• Style inspector — fills, borders, radius, shadows, typography
• Multi-page projects with preview (prototype) mode
• PNG export
• Local-first — projects are stored as .outlin files on your machine

Repository layout

apps/app/         Tauri shell + editor entry page
  src-tauri/      Rust backend, window config, capabilities
packages/editor/  Shared editor: canvas, layers, inspector, UI kit
scripts/          release tooling

Tech stack

• Tauri 2 + Rust backend
• Next.js 16 + React 19
• Tailwind CSS v4 + Base UI
• pnpm workspaces

Requirements

• Node.js 20+ and pnpm

• Rust (stable) with the Tauri prerequisites. On Fedora:

  sudo dnf install webkit2gtk4.1-devel openssl-devel gcc gcc-c++ glib2-devel gtk3-devel libayatana-appindicator-gtk3-devel librsvg2-devel

Development

pnpm install
pnpm dev        # runs the app with hot reload

Build a release bundle

pnpm build      # produces .deb and .rpm bundles in apps/app/src-tauri/target/release/bundle/

Contributing

See CODE_OF_CONDUCT.md and report vulnerabilities via SECURITY.md.

License

GNU Affero General Public License v3.0 — © 2026 Outlin.