Plan (calendar program)
[Image:Plan Open Motif screenshot.png|thumb|250px|Screenshot of plan running]
plan is a calendar and day planner program for the X Window System based on the Motif widget set. plan is free software released under a custom permissive license.
Its main window shows a month ; the user can insert appointments at given days and time. An accompanying program pland reminds the user of appointments by showing a warning window or running an arbitrary shell script. Other features of plan are:
- configurability of warnings
- week/month/year views
- periodic appointments
- appointment types
- client/server multiuser mode