Good but annoying behaviour of the toolbar menu Rated 4 out of 5 stars
It seems to be the most useful user agent manager that I have tested. The only thing I find really annoying is the behaviour of the menu associated with the toolbar icon: the menu is only visible as long as you press the mouse button. When using a laptop and a trackpad this becomes extremely annoying. Most other toolbar menus work differently: click to open the menu & click again or select an item from the menu list to close it.
It would also be nice to be able to select a UA string from a list of current UA strings.