Quick suggestion: could you please add a feature to unload tabs from a group that has been inactive for X amount of minutes?
Other than that, great add-on! Loving it!

This whole extension is a bit tricky to use as it is "rough around the edges" quite a bit in multiple regards and the menus look like crap. However, once you figure out how it actually works and how to use it, then it becomes very effective and pretty awesome.
In all honestly: The real issue of it is not the lack of functionality, but the bloat of extra functionality in the multiple setting-menus, right-click menus and so on, because most of those features are entirely useless to 99% users of this, but can confuse the hell out of new users.

life saver

Excellent extension; essential for anyone that gets easily overwhelmed and/or likes to separate their tabs by topic or workflow.

Allows to organize hundreds of tabs.

Simply The Best tab management feature

Extremely useful add-on and well implemented features, such as treating certain windows as a group, and even switching to them if there's already a window with that group opened, makes multiple workflows extremely easy to implement!

Works fine for me. I use 5-7 groups for the various customers I work on + 2-3 for internal projects, with 4-5 tabs in each group. It allows me to keep tabs open when I come back to a group, which I find invaluable. I could achieve the same result with bookmarks I guess, but I'd have to open the tabs vs using STG, there just update.

OK

Best one around. Fast leaning curve and super efficient, tabs are clearly organized. A global view allow to move tabs from one view to another, or to perform a global search.

@Exa Smith: Hidden tabs that does not belong to any screen can be recovered under "show other tabs" at the bottom of the menu. Then you are offered with several options like moving all these tab under current screen, or create a new screen for them.

the best extension i ever used

This is a great ad on for organized people.