Rainy - 10.92MB (Freeware) - beta
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

Change Log:

# Changes:
* Added change field dialog to manager which allows to change field for all selected events and tasks or even convert tasks to events and vice versa.
* Changing outlook appointments showed an unnecessary error.
* The menus work again in OS X Lion. The hide dock icon setting had to be removed though.
* Added "Show adjacent days" setting and grid calendar window for the Savannah skin.
* The DigiClock in Shadow4 can also show the current date.
* Added maxheight attribute for the eventtext elements in the month view.
* Category icons were not created unless the calendar was drawn.
* Rainlendar_ListAllComponents() returns now also tasks if the date parameter is given.
* Rainlendar_SetEventHandler() can register to calendar click events.
* It was not possible to add alarms for events if multiple calendars were selected.
* Alarm dismissal is stored locally too so now it's possible to dismiss read only events too.
* Added possibility to define a default alarm for all events and tasks in the calendar.