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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.
Check official pricingLinwood ButterflyProduct logo · See the interface on the official websiteHandwrite, 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.
Technologies 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.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
Self-hosted timeline for quick notes, logs, and snippets.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
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.
We have not checked this tool’s current pricing. Visit its official website before choosing a plan.
