Obsidian vs QOwnNotes

Obsidian is a note-taking app for keeping notes and building a personal knowledge workspace. Its core app is free, has no sign-up requirement, and stores notes on the user's device so they remain available offline. It runs on Windows, macOS, Linux, iOS, Android, and as a Chrome extension. Canvas provides an open workspace for research, brainstorming, diagrams, and ideas; thousands of plugins and an open API allow workflow customization. Shared vaults support team work with real-time updates. Sync adds synchronization and version history: Standard costs $5 per user per month billed annually, with one vault, 1 GB of storage, a 5 MB maximum file size, and one month of history. Plus costs $10 per user per month billed annually, with 10 vaults, 10 GB, a 200 MB maximum file size, and 12 months of history. Publish is $10 per site per month billed annually and includes up to 4 GB hosting per site. It offers themes, custom domains, password protection, and SEO optimization.

QOwnNotes is a free, GPL-licensed note-taking application built around plain-text Markdown files. Notes stay in a folder on your computer, and the app does not sync notes or media itself; you can choose a separate sync client such as Nextcloud or ownCloud. Those services can also provide note sharing, task lists, note history, and access to trashed notes. The editor offers Markdown highlighting and preview, hierarchical tags and subfolders, wiki-style links, Vim mode, and portable mode. Optional encryption includes built-in AES-256 and custom methods such as PGP. You can import from Evernote or Joplin, or work with existing text and Markdown files directly. QOwnNotes is available for GNU/Linux, macOS, Windows, Android, and the web, with a browser extension for clipping selected text, screenshots, and bookmarks. A web companion sends phone photos to the current desktop note. Integrations include Nextcloud, ownCloud, Dropbox, Syncthing, Seafile, CalDAV, and Git. The software is open source, with no paid plans stated.