Calendar Hosting Solutions -
| WebCalendar | WebCalendar is a PHP-based calendar application |
| Booked | Booked (formerly phpScheduleIt) is a simple but powerful reserve-anything scheduler. |
| ExtCalendar | ExtCalendar is a calendar application, with an integrated event management system. |
| phpicalendar | phpicalendar is an open source php application to parse and display shared icalendar-compatible calendars on a website |