OneTab is a browser extension built around a simple action: send open tabs to a saved list, then restore a page or the full group when you need it again. Its official help explains that the toolbar icon can store all tabs in the current window.
What it does well
Converting a crowded browser window into a list can make the active tab bar easier to manage. Saved tabs can be restored one at a time or together. OneTab also supports folders, moving items and sharing a selected group as a web page. Export and import tools are useful when you want a separate copy of your saved list.
What to check first
Decide whether you need temporary tab storage or a broader system for links and notes. OneTab is a good fit for the former. If your work depends on notes beside references or a project dashboard, compare it with a different kind of tool. Review the current privacy and optional sync settings before enabling sharing or backup features.
Official sources: OneTab help and its privacy information. Browser extension features can change, so check the current listing before installing.