Free 2009 calendar software for linux

My Calendar is a lightweight, easy-to-use Web calendar that is easily customizable using CSS.
There is also an included email script that you can have cron run every day to remind you of upcoming appointments.
My Calendar can also generate great looking printable calendars in Postscript and Adobe PDF format. Microsoft Outlook schedules can be easily imported.
Main features:
- lightweight and easy to setup
- email scrip to remind you of upcomming events
- email script can be run by cron and/or used to send emails to a mailing list for clugs and organizations
- easily generated pretty printable versiosn in postscript and PDF
- import events from Microsoft Outlook.
- easily customizeable with CSS and templating.

Calendar is a web-based calendar tool that produces pretty, readable calendars. NEW! Rewritten in Java for MySQL! Calendar project began out of frustration with other web-based calendar tools inability to display a readable calendar format. It was very much a project to "scratch an itch" -- to meet an immediate need that the author had. Since then, it has evolved considerably into a very useful tool that produces prettier calendars than those printed by most organizer software.
Main features:
- NEW! Subscriptions can be created to periodically fetch events from remote calendars, just like iCal and Sunbird can do.
- Events on the calendar appear exactly as typed in the admin tool -- the descriptions are not cut off in the display. This makes the calendar just as useful when its printed.
- The entire calendar is rendered in HTML -- no Flash or Java is used.
- Single-day, multi-day and occassional events are all supported. ("Occasional" events are those events that occur multiple times but dont necessarily follow a regular pattern.)
- Repeating events are supported and can repeat on a daily, weekly, monthly or yearly basis.
- Events may be categorized for easy administration.
- Nearly everything about the display is themable -- colors, fonts, border styles, first day of the week, weekday column widths, categories, etc.
- A calendar may be setup as a "private" calendar, so the user must be logged in to see it.
- NEW! A calendar may be setup as a "semi-private" calendar, so the user will only see the scheduled times but no event details.
- The admin tool is password protected and different users can be assigned different permission levels.
- Apple iCal and Mozilla Sunbird users can subscribe to the calendar with one click.
- A really bland, unimaginative name makes it easy to discuss this project without being overheard by foreign intelligence agents.
The first version of this software was written in ASP (VBScript) and ran on IIS 4.0 or higher with a database on SQL Server 7.0 or higher. The current version has been completely rewritten in Java to run on Tomcat 5.5 or higher with a database on MySQL 3.3 or higher. The feature set has grown immensely since then. The two versions have no code in common.

Periodic Calendar is a GUI utility which assists in women menstrual cycles tracking and fertility periods prediction.

The information tracked by this application can be used either to became pregnant or to prevent pregnancy.

At this point the fertility prediction is based on the calendar method which is not very precise. It is not recommended to use this method alone for the birth control.

Hebrew Calendar is a GTK class which shows the Hebrew dates and holydays and their corresponding Gregorian date. Hebrew Calendar is based on the GTK toolkit and it can be integrated in any piece of GTK software.

The dates convertor is a C++ class written by Nachum Dershowitz and Edward M. Reingold, and available in the Public Domain. There is also support for libhdate which is an open source hebrew to gregorian date library available in debian hebrew packages.

Darwin Calendar Server provides a CalDAV server.

The Darwin Calendar Server is a standards-compliant server that allows multiple users to collaboratively share calendaring information. It provides a shared location on the network to store schedules, and allows users to send each other and manage invitations.

In order to provide interoperability with multiple calendaring clients, the server implements the CalDAV protocol, which is an extension of WebDAV, which is in turn an extension of HTTP.

Gregorian calendar 1582 is a small Python script to generate calendars for any year in the history greater or equal to one.

The output format is the same as the Unix "cal" command. However, it supposes the Gregorian Reformation took place on October 4th, 1582, in contrast to the cal, which supposes the reformation took place on September 3rd, 1752.