Comendar

Comendar (short for "community calendar") is a free, GPL web application to generate a community event calendar web site.

It:
- enables members of a community to share information about forthcoming activities
- enables a community to publicise their activities to the world
- can provide effective, automated e-mail reminders
- is written in PHP and uses a MySQL database
Features:

Ease of use
Comendar has been designed to be used both by computer novices and experienced users. Attention has been given to making the core functionality easy to use.

Storage of appointments, special dates and tasks to do
Comendar knows about three different types of event, understands that you think about them differently and treats them accordingly.

Multiple different calendars
Comendar provides a public calendar, a community calendar, unlimited group calendars and a personal calendar for each registered user of your web site.

Calendar views resembling paper-based diaries
Users will be instantly familiar with the layout used for the day, week and month graphical calendar views.

Effective, automated reminders via e-mail
You can request e-mail reminders for any event. Substantial research has been conducted into the properties that make a reminder effective, thereby helping to ensure that you won't forget about important events if you use the reminder facility.

Categorisation of events via "interest groups"
Members of the site can join interest groups, which are groups of users with a common interest. Each event can be categorised by associating it with one or more groups. This allows users to find events they are interested in quickly, without being bombarded by irrelevant material.

Pre-defined event descriptions
You can save event descriptions that you think you'll use again, so you don't have to type them again next time you want to create an event of that type.

Easy configuration of repeating events
You can make copies of a particular event, either one at a time or in groups with an underlying repetition pattern. The software remembers that copied events are associated with one another, making it easy to find related events.

Handling of conflicting events
The software can cope with multiple overlapping appointments and will even alert you if you have clashing appointments in your personal calendar.

Community security model
Comendar recognises that most of the users of your site will probably know one another in person and the security rules have been developed accordingly. In particular, most of the site is maintained by the individual users; web site administrators have minimal responsibilities.

On-line user manual
Comendar has an on-line user manual built into it. Relevant instructions are also displayed on screen to help users as they work.

Modular software, which is easy to expand
It is possible for developers to customise the appearance of the site and add new functionality without modifying any of the existing code. Why not add your own custom features? The software was released under the GPL, to ensure it is of maximum benefit to communities, so you're free to modify it as you wish.

Tested on many software/hardware configurations
Comendar has been tested on servers running Apache on both Windows and Linux. Its web pages have been successfully viewed in a variety of web browsers on several different operating systems.