Arcmark
Your bookmarks, attached to any browser as a sidebar
Arcmark launched on February 20, 2026 with 216 votes, #131 of 16,628 launches that month and more than 99% of that year's launches.
In plain words
Arcmark is a native macOS bookmark manager that operates as a sidebar attachment to any browser window. It organizes bookmarks into workspaces with drag-and-drop functionality and stores data locally on the user's machine. The tool is open source and free, designed for macOS users who want a unified bookmark management system inspired by Arc Browser's sidebar approach.
written from the facts on this page · September 2026
From the sources
A native macOS bookmark manager that attaches to any browser window as a sidebar. Open source, free, and local-first. Heavily inspired by Arc Browser's sidebar.
A native macOS bookmark manager that attaches to any browser window as a sidebar. Workspace-based organization, drag-and-drop, and local-first storage.
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Arcmark – macOS bookmark manager that attaches to browser as sidebarFeb 2026 · github.com · ▲94Hey HN! I was a long-time Arc browser user and loved how its sidebar organized tabs and bookmarks into workspaces. I wanted to switch to other browsers without losing that workflow. So I built Arcmark, it's a macOS bookmark manager (Swift/AppKit) that floats as a sidebar attached to any browser window. It uses macOS accessibility API to follow the browser window around. You get workspace-based links/bookmarks organization with nested folders, drag-and-drop reordering, and custom workspace colors. For the most part I tried replicating Arc's sidebar UX as close as possible. 1.…
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