GraphMarks от Zetesis

GraphMarks turns your new tab page into a living map of your bookmarks: a graph where folders are hubs sized by how many bookmarks they hold, bookmarks orbit around them, and colored territories group each area.

THREE TOPOLOGIES
• Folders — your real bookmark hierarchy.
• Tags — GraphMarks adds tagging; a bookmark with several tags hangs from several hubs at once, something folders can't express.
• Domains — automatic grouping by site, with subdomains and paths as their own levels.

YOUR TABS, ON THE MAP
Bookmarks that are already open get a ring and one dot per tab; clicking jumps to the tab instead of duplicating it. Tabs without a bookmark show up as dotted nodes: drag them onto a folder to save them.

WINDOW SESSIONS
Save a set of windows with their exact layout and restore it whenever you return to that project.

DIRECT EDITING
Drag to move bookmarks between folders, rename, tag, pick custom colors and icons per folder — all from the graph itself, saved instantly.

SEARCH
Start typing and the search palette appears; also from the address bar by typing "gm" and a space.

PRIVACY
Everything happens in your browser: no servers, no network requests, no third-party services. Site icons are drawn locally as initials in their group's color. Your tags and sessions travel between devices through your own Firefox account sync.

Open source (MIT): https://github.com/Zetesis-Labs/graphmarks

Si AMO te pide también la política de privacidad y las notas de revisor en inglés: las notas ya te las di en inglés, y la política sería:

GraphMarks does not collect, store, or transmit any data. There are no servers, no analytics, and no network requests of any kind. Bookmarks, tags, and sessions are stored in the browser's local storage and, if you are signed in to Firefox, synced across your devices through Firefox's own sync infrastructure. The code is open source: https://github.com/Zetesis-Labs/graphmarks