Arcmark

2026-02-19 · Source: Product Hunt — The best new products, every day · Field: Technology & Digital — Software Development & Engineering · Depth: Fundamental Awareness, medium

Summary

Arcmark is a new, free, and open-source native macOS bookmark manager launching today, designed to attach as a sidebar to any browser window, including Safari, Chrome, and Brave. Heavily inspired by the Arc Browser's sidebar UX, it offers features like workspaces, nested folders, drag-and-drop reordering, and custom workspace colors. The application operates on a local-first principle, storing all data in a single JSON file at ~/Library/Application Support/Arcmark/data.json, without requiring accounts or cloud sync. It also provides import functionalities for existing Arc pinned tabs and Spaces, maintaining their folder structures, and supports importing bookmarks from Chrome. Arcmark can function as a standalone application even without its attached sidebar mode.

Key takeaway

For macOS users seeking an integrated and highly organized bookmark solution, Arcmark offers a compelling alternative to traditional managers. Its local-first, open-source nature provides control and transparency, while the sidebar integration minimizes workflow disruption. You should consider downloading Arcmark to streamline your browser experience, especially if you appreciate the workspace-driven organization style of Arc Browser.

Key insights

Arcmark offers a local-first, open-source macOS bookmark manager with an Arc-inspired sidebar UX.

Principles

• Local-first data storage enhances user control.
• Seamless integration into workflow reduces friction.
• Open-source fosters transparency and community.

Method

Arcmark attaches to browser windows using macOS Accessibility APIs, organizing links into workspaces and nested folders, with data stored in a local JSON file.

In practice

• Import Arc pinned tabs and Spaces directly.
• Organize links into project-specific workspaces.
• Use custom workspace colors for visual distinction.

Topics

• macOS Productivity
• Bookmark Management
• Open-Source Software
• Browser Sidebar
• AI-Assisted Development

Best for: Software Engineer, Product Manager, General Interest

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Editorial summary, takeaway, and curation by AIssential. Original article published by Product Hunt — The best new products, every day.