This is a free library of PHP tools for calculating holidays. US holidays are the only ones currently entered, but others could easily be added. It includes actual/observed days, Easter Sunday, and the number of weeks in a month containing a specific day.
Jax Calendar is an online calendar management tool that supports multiple data sources (MySQL AND/OR CSV textfile chooseable), different languages (currently English, German, Hungarian), different views (day, month, year), easy to customize via CSS, user-friendly admin frontend and detailed installation manual.
JCal is a fast and simple PHP/MySQL driven calendar application. It supports one event per day, although that event can be displayed as many events if desired. It requires .htaccess or the like to secure the admin section. All visual elements are controlled through stylesheets.
This is an event calendar that supports multiple views and recurring events. Ability to have multiple users update calendar. Add, delete and edit events all from a web interface. Completely customizable display via cascading style sheets. Color coded categories and all day events.
This is a calendaring software written with the PHP programming language interfacing with a MySQL database. The primary goals of this software include: Calendar software which allows a small group of posters to display information on a website, Simple methods which allow webmasters to draw the calendars.
A high degree of customizability for the appearance of the calendars, and Easy-to-use, web-based administration tools for the posting, modification, and deletion of events.