by C. McNutt MicroCalendar is a Windows system tray popup calendar. It is small, unobtrusive, and always ready so you can easily check calendar dates without messing up your computer's system time or having to use a resource-intensive application.
by Objectpark Software Pocket Calendar with Outlook integration. Accessible via the taskbar/system tray and keyboard shortcut. Shows appointments from Outlook in a small window with a single click or keystroke. Fast way of viewing / adding / editing Outlooks appointments.