Side panel
Pinned grid on top, open tabs and bookmarks below. Drag to pin, drag to reorder, multi-select with Cmd or Shift.
Cmd + Shift + K Ctrl + Shift + K
Chrome extension, no account needed
Onemark is an Arc-style side panel for Chrome. Your pinned sites, open tabs and bookmarks live in one panel, with a full manager page for the big cleanups.
Free. No account required.
What you get
Pinned sites, open tabs, bookmarks and downloads stop being four separate places you have to keep in your head.
Pinned grid on top, open tabs and bookmarks below. Drag to pin, drag to reorder, multi-select with Cmd or Shift.
Cmd + Shift + K Ctrl + Shift + K
When a tab drifts away from its saved URL, one click on the favicon takes it home. Closing a saved tab keeps the bookmark, and opening it again picks up the same tab.
Sweep idle tabs into dated folders instead of losing them, and restore them any time.
One box over your bookmarks, your open tabs and your downloads.
A folder tree plus smart views (All, Recent, Cross-profile and Downloads) for the search-and-destroy cleanup sessions that the panel is too small for.
Recent downloads right in the panel, and a full downloads view in the manager.
Your data stays yours
An extension that reads your bookmarks and tabs asks for a lot of trust. Here is exactly what Onemark touches, where it goes, and what stays behind when you remove it.
Everything runs locally in your browser. The developer operates no backend and receives no data of any kind, not your bookmarks, not your browsing, not crash reports.
Cross-profile sync is optional and off until you set it up. It writes to a Gist in your own GitHub account, with a token you create yourself and can revoke at any time. Use a secret Gist: those are unlisted, though anyone with the link can read one. Onemark never changes a Gist's visibility. It checks that visibility when you save your settings, and again on every sync, so a Gist that is made public later stops syncing too.
Onemark asks for bookmark and tab permissions, so Chrome warns you about your browsing history. It needs them to organize what is already in your browser. The only address the extension ever contacts is GitHub, and only for the sync you set up yourself.
No ads, no tracking. The developer does not receive, sell or share your data, and the only transfer that ever happens is the sync you switch on yourself. Uninstalling removes the extension's own storage, and your bookmarks stay in Chrome, where they already were.