Flexnote

Flexnote organizes notes as cards on an infinite canvas connected through bidirectional links. Users can view boards as mind maps, annotate and highlight PDFs and videos directly on the canvas, and write in a native Markdown editor. Notes are stored on the local device by default and are not uploaded to Flexnote servers, so editing works offline. Multi-device sync is optional and uses user-connected WebDAV, Amazon S3, OneDrive, or Baidu Netdisk storage. Canvases can be published as view-only interactive web pages via a shareable link. The desktop app supports Windows 10 or later (64-bit) and macOS 11 or later, and an Android app is available; the iOS app is in development and the full web app is on the roadmap. A free plan includes 3 whiteboards and 100 cards; Pro and Lifetime plans add unlimited whiteboards, Flexnote AI, and cloud sync.

Key features

• Infinite canvas for placing and organizing note cards
• Mind map view of canvas boards
• Tag-based database and card library
• Markdown editing with bidirectional links
• PDF reading, highlighting, and annotation on canvas
• Video annotation with timestamped notes for YouTube, Bilibili, and local files
• Web clipper
• Publish canvases as interactive web pages with optional password protection
• Local-first storage with optional sync via WebDAV, Amazon S3, OneDrive, or Baidu Netdisk
• Imports from Heptabase, SiYuan, Obsidian, Zotero, and Get笔记
• Custom rendering engine that handles 10,000+ nodes
• Flexnote AI with semantic search and knowledge-base Q&A (Pro and Lifetime plans)

Best suited for

• Students and learners doing deep reading
• Researchers synthesizing sources
• Visual thinkers and designers using mood boards
• Users who want local control over their data

Pricing

Free plan with 3 whiteboards, 100 cards, core canvas features, and local storage. Pro (quarterly, yearly) and Lifetime plans are also offered; the page refers to a pricing page for current prices, which are not stated on this page.