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Quantum-resistant cloud storage for secure file management, sharing, and collaboration

Flexnote is a local-first visual note-taking app for deep learning and research. Capture ideas as cards, arrange them on an infinite canvas, and connect them with mind maps and bidirectional links. Annotate PDFs and YouTube videos, then use Flexnote AI to search, summarize, and organize your own knowledge base. Notes stay on your device by default, with optional sync through OneDrive, S3, or WebDAV. Free to start on Windows, macOS, and Android.

One subscription for multiple AI models, tools, research, and workflow automation.

Converts PDFs to searchable documents using OCR.