The Great Grouper is a free and open-source browser extension made possible thanks to a generous grant by Google.

This utility is designed to help you manage the collection of web pages saved in your browser and in your bookmarks, and to make it easy to restore those tabs at any time. It has been especially designed to fit the needs of those of you who use a lot of tabs, not only to simplify the storage of the saved pages, but also to provide you with the basic tools to manage them, as well as to restore them at any time.

Apart from being the fastest browser storage tool available, The Great Grouper is very intuitive and easy to use.