LinwoodDev/Butterfly

Health v2 · maintenance only

Adoption not part of the score

1984 stars · 145 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Butterfly is a powerful, minimalistic, open-source note-taking app built with Flutter that supports drawing, handwriting, and rich text on an infinite canvas. It runs on Android, Linux, Windows, and the web, with local or WebDAV cloud storage and file import/export.

Use cases

• take handwritten notes with a stylus on an android tablet
• draw sketches and diagrams on an infinite canvas
• annotate pdfs and images in my notes
• replace onenote with an open-source cross-platform notes app
• sync my notes across devices via webdav
• use a free note-taking app on linux and windows
• organize notes with pages, areas, and waypoints

When to choose

• you want a free, open-source, cross-platform note app with drawing and handwriting support
• you need an infinite canvas for sketching, annotating pdfs, and freeform notes
• you want control over where your data is stored (local files or webdav)
• you need one app that works on android, desktop, and the web

When to avoid

• you need plain-text markdown files that integrate with tools like obsidian or git workflows
• you require real-time multi-user collaboration
• you need a mature ecosystem with extensive plugins and long-term enterprise support
• you only need simple typed notes without drawing features

Facets

application · maturity active

gui file-system image-processing pdf developer-tools cross-platform web-development windows cross-platform note-taking drawing infinite-canvas flutter open-source handwriting markdown webdav android linux web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="LinwoodDev/Butterfly")