Bookmarks+ by Mirko K.

Bookmarks+ turns your bookmarks into a fast, folder-based launcher — in your sidebar, your toolbar popup, and (optionally) your New Tab page.

Define folders with simple rules ("tag is reading", "URL contains github", "comes from this source", title contains…) and Bookmarks+ fills them automatically. Combine and nest rules with AND/OR/NOT; a bookmark can live in several folders at once. Optionally show only the latest N items per folder.

Sources you can mix and match:
• Linkding — sync your self-hosted Linkding instance via its REST API (token auth)
• Web feeds — follow any RSS, Atom, or JSON Feed as a live folder of its current links (categories become tags)
• Your browser's own bookmarks — folder names become tags • JSON — paste your own list
• Demo data — try it instantly, no setup

Background sync keeps everything current on a timer you control. Middle-click a folder to open everything in it at once. Per-site favicons with clean letter-tile fallbacks.

Privacy: your data stays in your browser. The only network requests are to the Linkding instance and the feeds you configure — host access is requested per origin and nothing else.