Very buggy. First, nothing on website indicating date of latest version, so who knows if it's updated for the latest Windows versions. As soon as I installed it, the taskbar became laggy and remained that way until I uninstalled, which was only after a few minutes both due to that and the fact it didn't even work right. It didn't show the small icons for all the grouped apps, just the big one for the app that the others were added to. When combining three apps, they seemed to work, but then when combining two others, it caused a second icon of the main one for that group to appear at the end of the taskbar, and I couldn't get the icon for the second app back. It also caused a gray box to be stuck permanently showing over one of them, like the preview you see when hovering over an app in the taskbar, but with no content, just solid gray. It even remained for a while after uninstalling. Just a complete mess. Too bad, because I would have gladly paid $5 to free up some space on the taskbar, had it just worked.