Compared to many calendar programs, Rainlendar stands out. Typically, and by default when first installed, this wonderfully customizable free desktop calendar takes up only a few square inches of the desktop, with a small, transparent calendar stacked on top of a pair of boxes. One is labeled Events, the other, To Do. Hundreds of skins are available to dramatically change its appearance. You can even mix different skins when configuring the look of your Rainlendar components. The look of individual events can also be modified with colors.

There are dozens of languages in which you can run Rainlendar, and it supports iCalendar standards, which means you should find it easy to add events from another calendar. It doesn't strain system resources, so you might choose to have more than one Rainlendar calendar showing at the same time. A Web search should turn up lots of skins and friendly hacks cooked up by Rainlendar devotees...Rainlendar site