Eridu

Eridu is an open-source web-based groupware application similar in functionality to Microsoft's Outlook and Outlook Web Access products. Current features include: E-mail - Connect to IMAP or POP server, MIME/Attachment support, Multiple file attachment support, Inline attachment viewing, Link to Address Book; Address Book - MIME/Attachment support, Link to Email and Calendar; Global Address List - Searchable, Link to Email; Calendar - Event recurrence support, Meeting request support, MIME/Attachment support, Inline attachment viewing, Link to Address Book; and ToDo List - Sortable.