Catholic Day
Plug-in for Today Screen that shows: - Name of corresponding feast of the day or name of the saint of the day - Significance of current day - Rosary Mysteries for each day - Detailed comment (for feast) or life of saint.
http://www.arimathea.net/download/cathday.cab.zip - 191Kb - Download - Screenshot

Calendar Constructer
Create and print calendars and keep organized with this intuitive program. Includes options to load from Windows tray, change fonts and colors, export to bitmap and insert clip art and images. Includes automatic holidays, daylight savings, lunar/moon phases, sun solstice/equinox, and religious... Make your own calendar with ease in CC's WYSIWYG click-and-edit environment. ... You can also schedule your own important dates.
http://www.calendarconstructer.com/calendar_software_download.exe - 1Mb - Download - Screenshot

Calendar Mine
Calendar Mine is the only calendar that you need, providing accurate date information starting in 1583 up until year 2500. It is an attractive, perpetual, multicultural, personal desktop calendar. Calendar Mine brings the beauty of a wall calendar and the availability of a desktop blotter to... It has over 500 built-in holidays covering 30 religious and ethnic groups including Hebrew, Islamic, Hindu, Chinese, African American, Eastern Orthodox, and Roman Catholic. ... Supports all international date and time formats, as well as 40 languages.
http://www.Calendarmine.com/Catalog/CalMineSW/CalMin20.exe - 8Mb - Download - Screenshot