1st choice from comp.windows.x.apps FAQ. It is the "classic" calendar app with memos and alarms, xcal normally sits idle and displays the date. When clicked on, pops up a `strip' for this month. Clicking on a day allows you to enter details. Automatically parses times entered, and reminds you 5 minutes before your appointment.

http://packages.debian.org/unstable/misc/xcal.html http://asis.web.cern.ch/asis/products/X11/xcal.html

http://www.mit.edu/afs/sipb/project/sipbsrc/src/xcal/