Note-Taking Tools
Platform information checked 2026-10-24. Butterfly is free AGPL-3.0 software with no required account or subscription for local notes. You supply a device, storage and optional stylus. Optional WebDAV/Nextcloud hosting and collaboration infrastructure can cost money. The provider also lists an iOS preview, which is not included as a reviewed stable platform here. PDF annotation and handwritten notes do not imply every OneNote or Acrobat feature, OCR or lossless notebook conversion.
Official app downloads and supported devicesUse the publisher’s linked store or documented APK channel. AltStack does not host APK files. A player or independent client does not grant access to paid subscription content.
Handwrite, draw and annotate documents on an infinite canvas, then retain editable notes and export PDF or image copies.
Butterfly is free AGPL-3.0 software with no required account or subscription for local notes. You supply a device, storage and optional stylus. Optional WebDAV/Nextcloud hosting and collaboration infrastructure can cost money. The provider also lists an iOS preview, which is not included as a reviewed stable platform here. PDF annotation and handwritten notes do not imply every OneNote or Acrobat feature, OCR or lossless notebook conversion.
Pricing checked .
Check official pricing
Handwrite, draw and annotate documents on an infinite canvas, then retain editable notes and export PDF or image copies. Visit the project website to check the currently available deployment options.
Provider-source review only; no candidate code, installer or APK was executed.
No one-line command has been verified for Linwood Butterfly; follow its official installation instructions instead of guessing a Docker image or installer.
Linwood Butterfly provider setup documentationTechnologies recorded in the catalog snapshot.
Draw diagrams and whiteboards in your browser.
The basic Excalidraw browser whiteboard is free. Excalidraw Plus is a separate paid workspace with additional organization and collaboration features. Check its current billing selection and trial conditions before upgrading.
Docs, whiteboards, and databases in one privacy-first workspace.
AFFiNE lists a free local editor and Cloud Basic with unlimited local workspaces, 10 GB cloud storage, a 10 MB file limit and up to three members per workspace. Paid Pro, Team, AI and commercial licensing are separate. Self-hosted licensing depends on release and components; backend/common-native code are exceptions to the root MIT grant. Confirm the paid-plan billing toggle before comparing amounts.
Self-hosted timeline for quick notes, logs, and snippets.
Official pricing explicitly says whole product $0, with no license, subscription, seat, usage or premium-feature fee. Self-hosting infrastructure remains the user's cost.
Encrypted note-taking that syncs across all your devices.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
Free instant whiteboard with real-time collaboration.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
Privacy-first knowledge management with block-level linking.
Official README explicitly says most features are free even commercially and member privileges require payment; sync and membership are separate from AGPL source/local software. No numeric price is asserted from the missing conventional pricing route.
Allow Google Analytics to measure page visits and basic device information using cookies? Your searches and form entries are excluded. You can change this choice at any time. Privacy details.
