Arcmark: Arc Browser's Sidebar for Any Browser

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Arcmark: Arc Browser’s Sidebar for Any Browser

Arc browser reimagined how we manage tabs and bookmarks with its innovative sidebar and workspace organization. But what if you love that workflow but need to use Safari for work, Chrome for development, or Brave for privacy? Arcmark solves this by bringing Arc’s signature sidebar experience to any browser—or using it standalone as a powerful bookmark manager.

Built as a native macOS app using Swift and AppKit, Arcmark floats as a sidebar that attaches to any browser window using macOS accessibility APIs. It follows your browser around, giving you instant access to workspace-organized bookmarks no matter which browser you’re using.

Key Features

🪟 Universal Browser Support

Arcmark isn’t tied to a single browser. It works seamlessly with:

  • Chrome
  • Safari
  • Brave
  • Arc (yes, even Arc itself)
  • Any other macOS browser

Or use it standalone as a regular bookmark manager window when you need it.

📂 Workspace-Based Organization

Just like Arc, Arcmark uses a workspace-first approach to bookmark management:

  • Workspaces: Create dedicated spaces for different contexts (Work, Personal, Research, etc.)
  • Nested Folders: Organize bookmarks hierarchically within workspaces
  • Custom Colors: Assign colors to workspaces for quick visual identification
  • Drag-and-Drop: Reorder bookmarks and folders with intuitive drag-and-drop

📥 Import from Arc

Switching from Arc? Arcmark can recreate your exact setup:

  • Parses Arc’s StorableSidebar.json directly
  • Recreates your workspace and folder structure
  • Imports pinned tabs and spaces
  • Preserves your carefully curated organization

🔒 Local-First Architecture

Your data stays yours:

  • All bookmarks stored in a single JSON file: ~/Library/Application Support/Arcmark/data.json
  • No accounts required
  • No cloud sync
  • No telemetry or tracking
  • Full data portability

🎯 Smart Window Attachment

Arcmark uses macOS accessibility APIs to:

  • Float alongside any browser window
  • Automatically follow the active browser window
  • Maintain position relative to browser chrome
  • Work without interfering with browser functionality

Platforms

Arcmark is built specifically for macOS:

  • 🍎 macOS 13+ (Ventura and later)

Get Started

Download the latest DMG from the releases page:

🔗 Download: GitHub Releases

Or build from source using swift-bundler:

git clone https://github.com/Geek-1001/arcmark.git
cd arcmark
swift-bundler build

Requirements: macOS 13+ (Ventura)

🔗 GitHub Repository: Geek-1001/arcmark

Current Status

⚠️ v0.1.0 - Early Release

This is a very early version. The core functionality works, but expect rough edges and missing features. The developer is actively seeking feedback to shape the roadmap.

Why This Tool Rocks

  • Freedom from Browser Lock-in: Use Arc’s excellent sidebar workflow with any browser
  • Native macOS Feel: Built with Swift/AppKit for smooth performance and native appearance
  • Privacy-First: No accounts, no cloud, no tracking—your bookmarks stay local
  • Arc Migration Path: Easy import from Arc preserves your existing organization
  • Open Source: Transparent development and community feedback-driven
  • Lightweight: Single JSON file for all data, minimal resource usage

Crepi il lupo! 🐺