Arcmark is a native macOS bookmark manager that attaches to any browser window as a sidebar. It's open source, completely free, and built to be local-first — meaning all your bookmarks live in a single JSON file on your Mac. Inspired by Arc Browser's sidebar, Arcmark brings that same streamlined, always-accessible bookmark experience to Chrome, Safari, Brave, Firefox, or any browser you use.
Arcmark attaches directly to any browser window as a sidebar, so your bookmarks are always one click away — no matter which browser you're using. It works with Chrome, Arc, Safari, Brave, and more.
Separate your bookmarks into custom-colored workspaces, each with its own collection. Create nested folders with drag-and-drop to build a hierarchy that matches how you think.
All your data is stored in a single JSON file on your Mac. No accounts, no sync servers, no cloud — just your bookmarks, exactly where you put them.
Rename folders and links directly in the list without opening a separate dialog. Use search and filter to instantly find any bookmark across all your workspaces.
"Your bookmarks, attached to any browser as a sidebar."
That one-liner captures Arcmark's core innovation: it's not a browser extension or a separate app you have to switch to — it's a sidebar that follows your browser window. Combined with local-first storage and full open-source transparency, Arcmark gives you the Arc-style bookmark experience without locking you into a single browser or a cloud service.
You want a fast, native bookmark manager that stays out of your way, works with any browser, and keeps your data entirely on your machine. If you've ever wished Arc Browser's sidebar worked with Chrome or Safari — or if you just want a clean, local-first alternative to browser-native bookmark managers — Arcmark is worth a look.
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meowbyte
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geek-1001.github.io/arcmark/
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