phpgroupware

phpgroupware is an open-source application written in PHP (and used with MySQL or postgresql plus a web server and an IMAP mail server). phpgroupware provides a web-based calendar, task list, address book, email, news headlines, and a file manager. Its modular nature enables you to plug in various components (around 50 at the last count) as you need them. The home page is www.phpgroupware.org/.

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