The DAViCal CalDAV & CardDAV Server is a repository for calendar, todo, journal and vcard entries to be accessed via CalDAV clients such as Evolution, Lightning, Apple iCal or the iPhone. You need to download both DAViCal & the AWL library.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.