The widget (version 1.2.2) adds calendar functionality to a WordPress website. This includes an automatically-generated Calendar page, like it or not. (If the widget is still installed on this site, you’ll see the Calendar page it generates in the menu.)

Like Ajax Events Calendar, All-in-One has severly limited options for recurring events. But the administrative interface and the widget’s output may be polished and useful enough for me to tolerate the shortcoming.