ical is a calendar package written in Tcl/Tk by Sanjay Ghemawat for Unix systems. ical is known for its simple, intuitive interface. It's possible for Tcl/Tk programmers to extend ical with custom functionality. It stores all calendaring information in a single flat text file per user that may be easily parsed by other programs. ical is free software released under the GNU General Public License.

ical
Developer(s)Sanjay Ghemawat
Stable release
3.0.4 / April 15, 2019; 5 years ago (2019-04-15)
Written inC++, Tcl, Tk
Operating systemLinux, macOS
TypePersonal information manager
LicenseGPLv2
Websitelaunchpad.net/ical-tcl

ical is not related to the iCalendar format standard, and does not support it. It is also not related to Apple Inc.'s calendaring application, Calendar (which was previously called iCal).

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