Unix implementation, a BBS method begun in 1981 with a CP/M-based BBS

A PHP & MySQL-based application serving as the technical fundament of a fully customizable user-driven online community.

Modular, extensible, notebook framework to make cross-platform interoperating prototype implementations. Allows shared input and display of sketches, text, equations, images, graphs, other data types. Tools for authentication, other services.

A group-enabled audio/jukebox application. BSD-style license.

A distributed group e-mail application for software/helpdesk functions, GPL license.

A planned PHP-based groupware including calendar, address book, forum, ticket system, WebMail, CRM and DMS.

Summary of open source groupware software.

Web-based open source groupware written in Java/JSP with support for PostgreSQL, Oracle and SQL Server.

WEB-based collaboration server: Mail, Organiser and Documents manager.

A web-based Italian office communication suite for archiving digital documents. Works with Hylafax server.

A servlet implementation of an open protocol GroupWare product. Backend (search engines, news, weather, POP3/IMAP/LDAP/NNTP, database) is based on other open source packages.

Lucane is a free groupware platform written in Java, designed with extensibilty in mind.

Free Open Source Portal Server allowing point and click community, content and XML syndication management on the Web, email, cellphone, other media.

Moregroupware is a Web-based Groupware written in PHP4. Includes modules like calendar, notes, todo, and contacts. It is database abstracted and uses a template engine for output.

Topic Map based java system, "a testbed for developing tools for Web collaboration", Apache license.

PHP/MySQL program which allows the user to create a database-driven, account-based, web art board/community. The project is working to convert Oekaki Poteto (OP) into a developer-friendly package.

onShore, a consulting firm, has a web-based, multi-user time-billing tool, GPL license.

OpenACS (Open Architecture Community System) is an advanced toolkit for building scalable, community-oriented web applications. If you're thinking of building an enterprise-level web application, OpenACS is a solid, proven foundation that will give you a 3-6 month headstart.

GPL PHP groupware package targeted at project development. Manages documents, tasks, requests, basic newsletters, knowledge entries, stores e-mail copies, e-mail repository address. Requires LAMP.

phpBB is an open source, flat style, message board written in PHP. It has all standard message board features.

Project management focused, inspired by the now defunct Macromedia Sitespring.

A multi-user web-based groupware suite written in PHP. It also provides an API for developing additional applications.

Open source groupware with calendar, project management, request tracker and 12 other modules. Supports more than 16 languages. Requires mysql, oracle, postgres or informix db.

A flexible and extensible groupware and project management solution, Apache license.

A useful intranet/groupware tool and application framework. Written and implemented with PHP. Goal is to be a simple, cross-platform, fast way to access/share almost any kind of information, GPL license.

Web based groupware providing group scheduling, addressbooks, shared folders.

Zope-based program that provides an IMAP based web mail client, contact and address book, notes, ToDo's, calendar and workgroup sharing.

A modular intranet/extranet solution based on the Ampoliros PHP web applications platform and taking advantage of Ampoliros features. GNU license.