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开源软件介绍：

FSNotes

FSNotes is modern notes manager for macOS and iOS.

macOS app

Key features

• Markdown-first. Also supports any plaintext and RTF files.
• Fast and lightweight. Works smoothly with 10k+ files.
• Access anywhere. Sync with iCloud Drive or Dropbox.
• Multi-folder storage.
• Keyboard-centric. nvalt-inspired controls and shortcuts.
• Syntax highlighting within code blocks. Supports over 170 programming languages.
• In-line image support.
• Organize with tags.
• Cross-note links using [[double brackets]].
• Elastic two-pane view. Choose a vertical or horizontal layout.
• External editor support (changes seamless live sync with UI).
• Pin important notes.
• Quickly copy notes to the clipboard.
• Dark mode.
• AES-256 encryption.
• Mermaid and MathJax support.
• Optional Git versioning and backups.

iOS app

Key features

• Sync via iCloud Drive.
• 3D Touch and configurable keyboard.
• TextBundle and EncryptedTextBundle containers.
• Pinned notes kept in sync with the desktop app.
• Dynamic fonts (iOS 11+).
• Night mode by location or screen brightness.
• Sharing extension.
• Encrypted note support.

License

FSNotes is written in Swift 5 and is open source (MIT license).