Description:

Kronolith is the Horde calendar application. It provides a stable and
featureful individual calendar system for every Horde user, with
integrated collaboration/scheduling features. It makes extensive use
of the Horde Framework to provide integration with other applications.

Right now, Kronolith implements a solid, stand-alone calendar system,
allowing repeating events, all-day events, custom fields, keywords,
shared calendars, iCalendar support, generation of free/busy
information, and managing multiple users through Horde Authentication.
The calendar API that Kronolith uses is abstracted such that it could
work with any backend, but right now we provide SQL (abstracted to
support most databases, including MySQL, PostgreSQL, Oracle, and MSSQL
via PEAR DB), MCAL, and Kolab backend libraries.