Recs.
Updated
Chrome extension that provides the ability to organize tabs into groups (called 'Workspaces') and easily switch between them.
Specs
Pros
Pro Incorporates tasks, notes, and collaboration
Plus: auto save, sharing permissions, various modes for organization, tab suspension, (optional!) new tab, layout switching, multi-platform, file attachments, most web apps supported, and its actively developed and updated with new features. With some ingenuity and a few extra extensions, I've even included my local directory resources in my client workspaces with in-place editing.
Cons
Con Application concept changing all the time
They still seem to be searching heavily for their vision of productivity focussed tab management. Big changes in user interface have occured in the last years. The UI is more complex than needed and it is not clear what they want to achieve.
Con Duplicating and loosing windows and tabs
Sometimes window sessions are duplicated and have to be merged by hand. More than once sessions and tabs have been lost. Mostly because it couldn't cope with Chrome restarting. Once also because the backend was updated and it went wrong. Workona has not at all proven to be reliable.
Con Doesn't always play well with others
Even though most of the bugs and glitches are a result of conflicts with other extensions or browser features (e.g. edge rolling our new tab management features)... it takes a lot of trial an error to figure out what works. Some feedback by way of a useful error message would help.