Amazing extension; makes window groupings much easier to manage, and automatically sorted pages mean it's much faster to navigate between a lot of pages, for increased productivity and convenience.

Also very nice to be able to scroll through tabs and have it change through tabs very quickly; makes changing tabs very easy.
Another nice thing is the option to 'lock' the scroll to a specific grouping for focused work.

Overall very well thought out extension, with a lot of great optional, and automative features