Guide
Everything Tabsa does, roughly in the order you are likely to want it. There is not much to learn — that is rather the point — so this is short on purpose.
Getting started
Install Tabsa and open it from the toolbar. It arrives as a pinned tab at the far left of the window, where the browser draws it as a single icon with no title and no width. That tab is the whole interface: click it to see what the window is holding, and otherwise leave it there.
Bundles and windows
A bundle is a named set of tabs. Save what is open and the window becomes that bundle — from then on the two are the same thing, and anything you open or close is written down as it happens. Open a bundle later and it gets a window of its own; open it again and Tabsa brings you to the window you already have rather than making a second one.
Moving tabs around
Drag a tab onto any bundle in the sidebar to file it there — the page closes here and opens where it landed. Tick several first and the whole set travels together, and Shift-click takes a range. Lists reorder by dragging too, and everything you can do by dragging you can also do from the keyboard.
Taking things back
Undo and redo cover renaming, deleting, moving and closing, and they move real tabs rather than only the list on screen. Deleted bundles wait in the trash until you empty it, archived ones sit in the archive, and the last twenty tabs to close are under Recently closed. Nothing is recorded after a tab shuts — it is recorded first.
Finding a tab
Search runs across titles, domains and addresses in every bundle at once. It is for the moment you remember a page perfectly well but not where you put it.
Settings and backups
Choose a theme, a language, and whether a bundle opens in a new window or this one. Addresses you would rather Tabsa never saved can be excluded. Export writes everything to a single file you keep and import reads it back, so moving to another computer is a file rather than an account.
Without a mouse
Tab to a row and press Space to pick it up, arrow to where it should go, then Space again to put it down. Undo and redo are the usual shortcuts. Anything hover reveals is reachable another way, because hover is never the only route to something.