Microsoft Calendar
From Wikipedia, the free encyclopedia
Microsoft Calendar was a personal organiser program distributed with Microsoft Windows starting from version 1.01 until Windows 3.11. Saved files have the extension .cal. It was superseded by the calendars in Schedule + (Windows for Workgroups 3.1), Microsoft Outlook, and Microsoft Works. However these are all add-on programs, and a basic Windows installation did not include a calendar after Windows version 3.1. This situation is set to change with the release of Windows Vista which includes a much more sophisticated iCal compatible calendar.