Places the date in your system tray. One click, and up *pops* the the only PIM you will ever need. Popup Calendar shows your schedule 3 ways: by day, week, or month. You can set appointments, write notes, and even save to/from a file. And Popup Calendar has lots of extras, such as holidays, a to-do list, printing, copying dates to the clipboard,creating HTML calendars, searching, date math functions, moon phases, and a TON of options.