Hula
Hula was an open source mail and calendar project based on open standards announced on February 15, 2005 by Novell. It is derived from an existing product by the same software house, called NetMail, and retains many of the architectural features of that software. However, important components such as the mail store are being re-developed to integrate new functionality (such as search) and new features (such as calendaring, using the calendar server protocol CalDAV). As such, when complete it will be a more modern system with better support for common standards in comparison to the earlier NetMail product.
Current version: SUSE
History