Linwood Butterfly

Spec sheet

Purpose

Butterfly is a note-taking app for handwriting, sketching, annotating, and organizing work on an infinite canvas.Read 11 Oct 2026 · butterfly.linwood.dev

Platforms

The maker lists Android, Windows, macOS, Linux, and browser support; its iOS version is in preview and may not work as expected.Read 11 Oct 2026 · butterfly.linwood.dev

Free plan

YesRead 20 Sep 2026 · butterfly.linwood.dev

Integrations

WebDAV,NextcloudRead 20 Sep 2026 · butterfly.linwood.dev

Support

The downloads page links to a support page and a community FAQ.Read 11 Oct 2026 · butterfly.linwood.dev

Browser requirements

The web app stores data in the browser and works offline, but its documentation says Firefox and Safari lack the required WebAssembly features.Read 11 Oct 2026 · butterfly.linwood.dev

Canvas tools

It supports stylus, touch, and mouse input, with adjustable stroke width, color, smoothing, and texture.Read 11 Oct 2026 · butterfly.linwood.dev

Collaboration

Real-time collaboration is an experimental feature that supports Swamp or a WebSocket server; the Swamp server acts as a proxy and cannot read end-to-end encrypted data.Read 11 Oct 2026 · butterfly.linwood.dev

Content

Documents can combine notes with imported photos, PDFs, and SVGs, and content remains editable after placement.Read 11 Oct 2026 · butterfly.linwood.dev

Data handling

The maker says documents remain on the device unless users choose another storage location, and its app privacy policy says requested personal information is retained on the device and not collected by the maker.Read 11 Oct 2026 · butterfly.linwood.dev

Export

The documentation lists export formats including Butterfly files, images, SVG, PDF, and Xournal++ files.Read 11 Oct 2026 · butterfly.linwood.dev

File formats

The maker documents Butterfly Note (.bfly) and Butterfly Raw Note (.tbfly) formats.Read 11 Oct 2026 · butterfly.linwood.dev

Note sharing

YesRead 20 Sep 2026 · butterfly.linwood.dev

Offline access

YesRead 20 Sep 2026 · butterfly.linwood.dev

Real-time collaboration

YesRead 20 Sep 2026 · butterfly.linwood.dev

Reusable assets

Users can create templates and packs containing reusable content, stamps, palettes, and styles.Read 11 Oct 2026 · butterfly.linwood.dev

Self-hosting

The maker provides instructions for building and hosting Butterfly’s web app, including a Docker image.Read 11 Oct 2026 · butterfly.linwood.dev

Storage integrations

Notes can be stored locally or in WebDAV cloud storage, with the maker specifically mentioning Nextcloud for syncing and backup.Read 11 Oct 2026 · butterfly.linwood.dev

Plans and prices

Every Linwood Butterfly plan and price →

Where Specifiction places it

• Note-taking apps#51 of 2168.5
• Notes apps#27 of 838.4