OpenNotas

Free plan

What the maker publishes

Backup

Backup exports notes to a JSON file, and restore imports notes from an exported JSON file. source

Encryption

Notes are encrypted with AES before being stored on the sync server, while on-device data is stored as plain text. source

Free plan

Yes source

Installation

Users can install the PWA directly or build the app from source; building requires Node.js version 18 or later. source

Integrations

Turso; AWS S3; Google Cloud Storage; Azure Blob Storage; DigitalOcean Spaces; Cloudflare R2; Backblaze B2; MinIO; IBM Cloud Object Storage; Supabase Storage; Ceph source

Integrations

Documented sync options include Turso for notes and S3-compatible storage for images. source

Local storage

The app stores note data in the browser’s persistent storage, so clearing browser data or uninstalling can cause data loss. source

Markdown

The app supports Markdown and integrates CodeMirror, TipTap, and Milkdown editors. source

Mobile

The documentation gives installation steps for Android and Apple devices using the browser’s install or add-to-home-screen option. source

Offline access

Yes source

Offline use

Notes can be stored locally and used offline; they sync when an internet connection is available. source

Supported platforms

web,Windows,macOS,Linux source

Purpose

OpenNotas is an open-source, cross-platform PWA for quickly writing and managing personal text notes. source

Restore limitation

OpenNotas does not detect duplicate notes during restore, so valid notes may be imported repeatedly. source

Support

The maker directs users with issues to contact them or use the Telegram community channel. source

Sync

Users configure syncing through storage adapters and provide or generate an encryption key. source

Checked against the maker's pages on 12 Oct 2026.