This extension is designed to organize tabs from toolbar popup. The UI for the extension can also be opened in a standalone popup window or a new tab (choose an item from toolbar button context-menu). Tab Manager add-on supports multi-window and also incognito mode. To work with this addon, just open extension UI and start managing your tabs. Within the UI you can see a search-bar at the bottom. Above that, there is the list of open tabs for window #1 (a new section is added for each new window).
Within each row (tab item) in the list, there are several buttons. The first is the pin button which can be used to pin a desired tab(s). Next is the HTTP/HTTPS sign which shows if a website supports SSL protocol or not. Third icon is the tab icon which updates automatically depending on the tab URL. You can see the tab title right after the tab icon. There are also two buttons on the right side for editing or removing the current item.
Please note that within the UI, all tab items are draggable. Once you drag an item, the actual tab will be re-positioned as well.
To report bugs, please fill the bug report form in the addon's homepage (https://mybrowseraddon.com/tab-manager.html).