Rainlendar is a customizable calendar that displays the current month. It is a very lightweight application that doesn't use much system resources or take much space on your desktop.
*Small and lightweight
*Different type events can have different appearence
*Supports Windows transparency
*Synchronizes events between several clients
*Localized for multiple languages
*Shows an alarm when an event is due
*Supports iCal files.
*Shows Outlook's appointments
*Includes a todo-list
*Works also as Litestep plugin
*Displays the current date in tray icon
*Can stick to the desktop (i.e. doesn't hide with Show Desktop)
*Hotkeys for quick access
*Easy skinning with an UI
Download: Rainlendar 2.7 Beta 85