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Drupal is a free and open source modular framework and content management system (CMS) written in the programming language PHP. Drupal, like many mode...

Joomla! is a free, open source content management system for publishing content on the world wide web and intranets. The system includes features such...

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server...

The OPEN-XCHANGE Collaboration and Integration Server Environment allows you to store appointments, contacts, tasks, email messages, bookmarks, docume...

Plans is a powerful and flexible Web calendar. Its features include recurring events, merged calendars, event icons, custom themes and templates, MS O...

OpenGroupware.org is a set of applications for contact, appointment, project, and content management. It is comparable to Exchange and SharePoint por...

Bugzero is a Web-based bug tracking, defect tracking, issue tracking, and change management system used in a distributed team environment to track sof...