# LinwoodDev/Butterfly

🎨 Powerful, minimalistic, cross-platform, opensource note-taking app

Repository: https://github.com/LinwoodDev/Butterfly
Canonical: https://ross.abutalabs.com/products/linwooddev-butterfly
Homepage: https://butterfly.linwood.dev
Language: Dart
License: AGPL-3.0
License Family: copyleft
Topics: flutter, app, notes-app, android, linux, windows, opensource, customizable, web, dart, drawing, cross-platform, note, notes, onenote, dartlang, note-taking, writing, productivity
Last push: 2026-08-26T20:13:57+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 2081, "days_push": 7, "days_rel": 23, "gap_med": 29.0, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1984, forks 145 (observed 2026-08-28T04:06:02.013725+00:00)

## What it is
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
- artifact type: application
- maturity: active
- function: gui, file-system, image-processing, pdf
- domain: developer-tools, cross-platform, web-development
- platform: windows, cross-platform
- tags: note-taking, drawing, infinite-canvas, flutter, open-source, handwriting, markdown, webdav, android, linux, web-server

## Member repositories
- LinwoodDev/Butterfly (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:02.013725+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:03:18.393940+00:00, confidence not recorded.
  - readme: https://github.com/LinwoodDev/Butterfly (fetched 2026-08-28T04:06:02.013725+00:00, sha dbbc76121b91)
  - homepage: https://butterfly.linwood.dev (fetched 2026-08-29T10:43:04.954056+00:00, sha fea1f615b9d4)
  - site_page: https://butterfly.linwood.dev/docs/v2/intro (fetched 2026-08-29T10:43:04.957354+00:00, sha 2ac563c12c73)
- Data as of 2026-08-30T08:39:29.467469+00:00.