Container Homes

Features

• Set a different home URL per container (plus one for "No container / Default"). Click the toolbar button, or press Alt+Shift+Home, to load that container's home URL in the current tab.
• Set up to 9 app slot URLs per container. Press Alt+Shift+1 through Alt+Shift+9 to switch to that slot's tab — scoped to whichever container is currently active — or open it in a new tab if it isn't already open. If the tab lives in another window, that window is raised too.
• Slots remember the exact tab they last switched to (not just a URL pattern), so navigating around inside an app (e.g. different Slack channels or Gmail threads) doesn't break the binding. If that tab is closed or the browser restarts, the next press falls back to matching by the slot URL's origin, or opens a fresh tab if nothing matches.
• Export your configured home URLs and slots to a JSON file, and import them back in (on this device or another). Importing replaces the current configuration after a confirmation prompt.
• Press Alt+Shift+0 to group and sort the tabs in the current window: one native tab group per container (plus a "No Container" group), each with its configured slot tabs sorted to the front in slot order. (Not available on Firefox for Android.)
• Press Alt+PageUp / Alt+PageDown to switch to the first tab of the previous or next tab group, wrapping around at either end. Works whether or not the current tab is itself in a group.
• Press Ctrl+Shift+Space to open a new tab next to the current one, in the same container and joined to the current tab's group (if it's in one).
• Optionally (off by default — enable it on the options page), automatically add every new tab to its container's tab group in the current window as soon as it's created, joining an existing group or creating one if none exists yet. Pinned tabs are left alone.

• activeTab — read the current tab's container and navigate it to the configured URL.
• tabs — find a slot's existing tab (by remembered id, or by URL as a fallback) across all of a container's tabs, and re-focus its window.
• cookies — required by Firefox to open a new tab in a specific container (tabs.create with cookieStoreId) when a slot's tab isn't already open.
• contextualIdentities — list your Firefox containers on the options page.
• storage — save your configured URLs locally, and remember which tab each slot last switched to for the current browser session.
• tabGroups — create, title, color, and reorder native tab groups for the group-and-sort command. Not available on Firefox for Android; the command no-ops there.