Pal is a color, command-line calendar similar to gcal with support for displaying events and holidays. It supports many types of recurring events (daily, weekly, monthly, yearly) and has an easy to use interface for adding new events. pal is distributed with calendar files that include significant holidays and events.
RealBasic Event Calendar allows RealBasic programmers to easily implement a fully featured monthly event calendar into their applications. Users and programmers can add, edit, and remove event dates to a graphical calendar, and then, using drag-and-drop, move the dates around easily and simply. Developers are able to easily manage the dates that are displayed and moved both by attributes as well as by user actions.
PlanMyDay helps you plan all the activities that have to be done today. It imports the following entries from your built-in or extra applications: todos, floating events (timed and untimed), and user-defined events. You can assign the duration each of them takes and reorder them as you wish. PlanMyDay calculates (from a given start time) when every item should be finished. After you mark what percent of each entry is finished, the complete timetable is recalculated.
EGroupware is a Web-based groupware suite. It contains many modules, including Calendar (personal calendar and group scheduling, notifications and alarms), Mail (IMAP only), InfoLog (todos, notes, and phone calls linked to contacts/CRM), Contacts (an address book for storing and sharing contact information), ProjectManager, Tracker (bug or incident tracking), TimeSheet, SyncML, CalDAV & CardDAV support, and SiteMgr content management
Antipodes.Cubes is a BPM system for visual modeling and automation of processes. Processes are designed visually as block diagrams in a graphical environment called WfArchitect. The logic and flow of the processes are reflected in the different containers (blocks or shapes) and the connections between them. It supports task, condition, user decision, code, timer, and scheduler containersm and allows for the inclusion of subprocesses in processes and also recursive use of subprocesses.
Annif is a minimalistic Web-based birthday (calendar) monitoring tool. Users can add and remove birthday dates and ask to be notified of birthdays. No other usual calendar features will ever be included. It has multi-lingual support, and currently has translations for English and French.