Notesnook
Open source and end-to-end encrypted note taking app
Notesnook is a free, open source note-taking application that encrypts notes on the user's device, so only the user can read them. It is built by Streetwriters (Private) Limited, a self-funded company in Pakistan, and is designed as a private alternative to mainstream note-taking tools. The app supports notes, notebooks, tags, reminders, and linked notes, with sync across devices.
Key features include end-to-end encryption using XChaCha20-Poly1305 and Argon2, app lock via fingerprint, PIN, or password, a separate vault password for sensitive notes, published notes with optional password protection, web clippers, an editor with tables, checklists, code blocks, math, outlines, and attachments, and an inbox API for integrations with Zapier, IFTTT, and custom scripts. It runs on Windows, macOS, Linux, Android, iOS, and the web, and is open source under GPLv3 with a self-hostable sync server.
Notesnook is available as a free plan with unlimited notes on unlimited devices, with paid editions (Essential, Pro, and Believer) that add storage, larger file uploads, and additional features. Paid plans are available monthly, yearly, or prepaid for five years, with a 14-day trial on monthly and yearly plans.
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