Free calendar 1.0 software for linux

PloneiCalendar allows you to share and browse calendar files in Plone, and manage them in your calendar application.
PloneiCalendar is a product designed by Ingeniweb to handle calendar files in Plone. It is based on the iCalendar file format.
Once an PloneiCalendar is created in Plone, you can share it with other users or groups (you can give read or write permissions), browse it by day, week and month or modify it by using standard calendar applications like Mozilla Calendar or Apple iCal (or Ximian Evolution or KOrganizer or whatever you want - may be even Microsoft Outlook ;) ).
Main features:
- Upload and download your calendars in Plone
- Give permissions to users or groups to view/modify your calendars
- Browse your calendars by day, week or month
- Instantly find all your calendars with the included portlet
- View the event details
- All-day events and most recurring events are supported
- Handling of simultaneous events, even in complex cases (see screenshot)
- Handling of i18n date formats (currently, english and french formats can be displayed)
- Cool looknfeel : color integration with your plone site, personalization of the color of your calendars, 100% pure CSS in the calendar views (no table used)

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.

VCalendar is an open source Web calendar application with related tools, for posting and maintaining events and schedules online, in calendar format.
VCalendar project is an excellent and free solution for use by online Web communities and any commercial and non-commercial organizations. Unlike any other online calendars, VCalendar comes with source code in multiple programming languages: PHP, ASP and ASP.NET (C# and VB.NET); with potential for adding more technologies in the future.
Main features:
- Localization features, with initial Internationalization in English and Russian, with language selectable by end-users
- Dynamic CCS (stylesheet) styles, selectable by end-users
- Annual, monthly, weekly and daily calendar views
- Multiple categories for classifying calendar events
- Recurring and all-day events
- Role-based user permissions and calendar configuration
Enhancements:
- Fixed the bug reported on SourceForge Forum: 3771522: Unable to select Month or the Year

Kalendae project is a tool to convert dates between the modern western calendar (entered using a localized GUI) and the ancient Roman one expressed in Latin.

Leap years are taken into account starting from 10 B.C.

Active Calendar is PHP Class, that generates calendars (month or year view) as a HTML Table (XHTML-Valid). Active Calendars source code is free.
You can modify or pass it on under the conditions of the GNU Lesser General Public License, published by the Free Software Foundation.
The calendars created by this class:
can be static (without any links)
can optionally have navigation controls
can optionally have a date picker control
can optionally have linkable days (url or javascript)
can optionally have event days with event links and own layout
can optionally have event content with links and own layout
support different GMT zones for the current date calculation
support month and day names, depending on your language
can be configured using CSS
do not require Javascript to be displayed or navigated (server side generation)
can be generated with just 2-3 lines of code
Active Calendar is based on the PHP native date functions (default) and supports optionally the ADOdb Date Library. Supported dates (on systems using a 32-bit signed integer Unix time_t):
Using PHP native date functions: 1902 - 2037 (UNIX) and 1971 - 2037 (Windows)
Using ADOdb Date Library: 100 - 3000 and later [ limited by the computation time of adodb_mktime() ] on both UNIX and Windows. To use the ADOdb Date Library just include it in your scripts. The Active Calendar class will use the library functions automatically.
Enhancements:
- An activeCalendarWeek subclass was added.
- The class can generate week calendars (one or multiple rows) according to the date or the week number of the year passed to the class using two public methods, showWeeks() and showWeeksByID().
- The structure of the download package was updated and an example was added for demonstrating how the Active Calendar can be used as a popup date selector in a form.

Milo Calendar is a SuperKaramba script that reads the dates stored by KOrganizer and displays them on your desktop in a clear, neat calendar.

The calendar also displays todays date and it can move back/forward months. the descriptions of the events are shown via tooltips.

The images for this theme should be very customizable. In the next versions I will try to make them compatible with rainlendar themes found all over the net!

I must thank DeVoeSquared.com for the iCal module, and rainy (rainlendar) for the theme.

Note: if you have multiple KOrganizer resources, you can change the name of the file that milo calendar reads:

the default is:
reader = iCal.ICalReader(std)
in the dir: ~/.kde/share/apps/korganizer/std.ics