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ACal The ACal Project is a Web-based event calendar made for everyone. It was designed to be simple to install and setup. It does not require a database server, and installing is as easy as drag and drop. It can run on almost any ISP's server that has PHP installed.

AWOL AWOL is an in/out board, similar to something you'd see on the wall of a lobby or desk of a switchboard operator, to keep track of who's in the building, when they'll be back, etc. It's accessable from the Web, so people can mark themselves in or out from their own desk.

Absence 'absence' is a calendar tool for keeping track of people (but could be adapted for any other object) on a daily basis. It is meant to replace the traditional whiteboard where someone has used a permanent magic marker to mark a matrix, and vacations/training/etc. are marked with non-permanent markers as blocks. 'absence' is a CGI system, and has a resolution of one day. It is not meant for keeping appointments or for other activities that requires finer resolution. It generates an image for each month to be displayed using the GD library, and it can be configured to produce PNG or GIF (or even JPEG).

Active Calendar "Active Calendar" is a PHP class that generates calendars (month or year view) as HTML tables (XHTML-Valid). It can produce static calendars without any links or calendars with navigation controls, a date picker control, event days and content with event URLs, and linkable days (optionally URL or Javascript). The layout can be configured using CSS, and JavaScript is not required. The supported dates (on systems using a 32-bit signed integer Unix time_t) are: 1902-2037 (Unix) and 1971-2037 (Windows), when using the default PHP native date functions, and 100-3000 and later, when using the ADOdb Date Library.

Agnostos Agnostos is a simple Web-based tool for managing to do lists. It's designed to prevent the cerebral stack overflow that occurs when you try to keep track of several simultaneous projects by brainpower alone. You can prioritize tasks (optionally by date), and assign them to individuals, workgroups, departments, or any combination of the three. Tasks can be assigned priorities and due dates, and sorted by status, priority, or due date. The current release includes simple reporting facilities (which describe the progress on a particular project over the previous week) and an 'audit trail' for each task (time and date of each change of status and priority priority, or individual, group, or department to which it is assigned).

Bennu Bennu is a software library written in PHP that implements the functionality of the IETF iCalendar 2.0 specification (RFC 2445). Its purpose is to enable applications which have an interest in this format (e.g. calendaring, scheduler and organizer programs) to support iCalendar in an easy, powerful, and extensible way.

CDS Indico Web application to schedule and organise events, from simple lectures to complex meetings, workshops and conferences with sessions and contributions. Also includes an advanced user delegation mechanism, allow paper reviewing, archival of conference information and electronic proceedings.

CGI Calendar 'CGI Calendar' is a CGI-based event calendar that does not require an SQL database and can run on any system that has a web server supporting CGI and Perl. It supports unlimited events per day that can be sorted by time and by summary. Events are editable and can be described using HTML. It features month, day, and single event views, password protection, a UI controlled by HTML templates and CSS, and support for multiple calendars with a single installation.

CWcal CWcal is a Web interface for configuring Wcal. It features complete resource management, short and detailed configuration views, user and group management, access control management with templates, and direct wcal.conf file modification.

Calconsole Calconsole is a calendar and schedule command-line appliction. It is like the standard "cal" utility but with a schedule feature. It works with event data stored in ICS files which are compatible with other calendar applications.