OpenNotas review
A free, open-source Markdown notebook for private, self-hosted synchronization.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
OpenNotas is a free, open-source personal note-taking application delivered as a cross-platform progressive web app. It is designed for people who want a lightweight place to capture and manage Markdown text notes across web, Windows, macOS, and Linux. Notes can be edited offline, stored locally in the browser, and optionally synchronized across devices. Password-protected notes, multiple Markdown editors, and JSON backup and restore add practical controls for personal use.
Its strongest differentiator is the combination of synchronization flexibility and encryption. OpenNotas can synchronize through Turso or a range of storage adapters, including AWS S3, Google Cloud Storage, Azure Blob Storage, DigitalOcean Spaces, Cloudflare R2, Backblaze B2, MinIO, IBM Cloud Object Storage, Supabase Storage, and Ceph. Notes can be encrypted with AES before synchronization, while local data remains stored in the browser. This makes the product a particularly suitable choice for self-hosters who want to select their storage layer rather than depend on a single note service.
The trade-off is a focused feature set. OpenNotas centers on personal Markdown notes, offline access, backups, password protection, and synchronization, rather than shared workspaces or collaborative editing. Sharing and collaboration are not verified features, and AI capabilities are not part of its positioning. Mobile coverage is also not listed among the supported platforms. Choose OpenNotas if control over storage, open-source availability, and encrypted synchronization matter most; choose another note-taking app if mobile apps, team collaboration, or AI-assisted workflows are essential.
Questions about OpenNotas
What does OpenNotas run on? Web, Windows, macOS and Linux. It runs in the cloud, as a desktop app and as a mobile app.
What does OpenNotas integrate with? 11 integrations, including Turso, AWS S3, Google Cloud Storage, Azure Blob Storage and DigitalOcean Spaces.
Who is OpenNotas built for? Solo users and small businesses (our editorial estimate).
OpenNotas pros and cons
- Where it wins
- AES encryption protects synchronized note data
- Works offline across web, Windows, macOS, and Linux
- Supports many storage adapters, including S3-compatible services
- Where it doesn't
- No verified sharing or collaboration features
- No listed AI features
- Mobile coverage is not listed among supported platforms
OpenNotas fact sheet, pricing and score →
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