Webical is a web application

Web application

A web application is an application that is accessed over a network such as the Internet or an intranet. The term may also mean a computer software application that is coded in a browser-supported language and reliant on a common web browser to render the application executable.Web applications are...

 to view and edit multiple iCalendar

ICalendar

iCalendar is a computer file format which allows Internet users to send meeting requests and tasks to other Internet users, via email, or sharing files with an extension of .ics...

s. Its features include progressive enhancement

Progressive enhancement

Progressive enhancement is a strategy for web design that emphasizes accessibility, semantic HTML markup, and external stylesheet and scripting technologies...

, a plugin framework

Software framework

In computer programming, a software framework is an abstraction in which software providing generic functionality can be selectively changed by user code, thus providing application specific software...

 that can be used to enhance the GUI and to add additional back end providers, pluggable authentication, and internationalization

Internationalization

In economics, internationalization has been viewed as a process of increasing involvement of enterprises in international markets, although there is no agreed definition of internationalization or international entrepreneurship...

. Dutch and English localizations are provided, and adding more locations is easy. A Java servlet container, such as Apache Tomcat

Apache Tomcat

Apache Tomcat is an open source web server and servlet container developed by the Apache Software Foundation...

, is needed to run it.

Webical is being developed by Func. Internet Integration. It is free

Free software

Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

 and open source

Open source

The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...

 software released under the GNU General Public License

GNU General Public License

The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

.

There is a public demonstration available at http://demo.webical.org. It runs the latest version of Webical. The data is reset every night.