WebCalendar is a PHP-based calendar application that can be configured as a single-user calendar, a multiuser calendar for groups of users, or as an event calendar viewable by visitors. The servers that can run this application include MySQL, PostgreSQL, Oracle, DB2, Interbase, MS SQL Server or ODBC. When you look at how to set it up, you'll see that the schedule management system is available for one person or a group of people, which allows one or more assistants to manage the calendar for another user. There is also an event schedule that allows visitors or users to submit new events. This platform works on a variety of browsers and is XHTML/CSS compliant.


Booked is a calendar application that works in the cloud. You can book anything, track everything and do it securely. There is a ton of options that make this a viable solution for either one individual or a group of people. Not only do they handle the installation and maintenance of hardware and software, but you can have an unlimited number of users, schedules and resources. All of this occurs with a single installation and no technical knowledge is required. You can be up and running in five minutes or less, and there is nothing to install in your operating environment.


ExtCalendar is a powerful multiuser web-based calendar application. Not only does it support multiple languages, but it also arrives with themes, recurring events, categories and users and groups management. The environment and general settings can be set up by the administrator with full template configuration. There are product updates which can be downloaded and installed easily. It's a very lightweight program that does not require a lot of resources and lives up to the claims it makes from the start. If you are looking for an easy to use calendar application that can be up and running immediately, this is an option you should consider for yourself or that of your team.


Phpicalendar is a great tool for anyone running multiple intranet servers and who needs to have multiple calendars on each one. Users will have the ability to edit their own ics files and have them show up on the same calendar but in different colors. With support for up to 25 different languages, this is a tool that many groups of people can use efficiently and it displays iCal files in a logical, clean manner using the preferred views of either days, weeks, months or years. It is PHP-based and runs according to the v2.0 IETF speculations, so check it out for your calendar needs.