Θ Computers: Software: Operating_Systems: Linux: Projects: Networking: Groupware

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phpGroupware Open Source collaboration software written in PHP. Includes features such as email, shared calendar, task list, address book, inventory, trouble ticket system, and many others.
Domino for Linux Linux and information from Lotus Development Corporation staff about how to configure, design and rollout Lotus Domino R5 for the Linux Platform.
groupware PHProjekt Open source groupware suite with calendar, project management, request tracker and 12 other modules. Supports more than 20 languages. Requires mysql, oracle, postgres, interbase, ms-sql or informix db.
e-Bills - billing application for Linux The home of e-Bills, as web-enabled billing application for Linux using PHP and MySQL. Contains downloads and application information.
twig An opensource groupware/intranet application focusing on simplicity and being cross-platform / browser-independent.
Neo Japan International GmbH - iOfficeV4 A full featured commercial web based groupware suite that aims to improve communication and information sharing for groups.