Browse free open source Calendar software and projects for Mac below. Use the toggles on the left to filter open source Calendar software by OS, license, language, programming language, and project status.

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  • 1
    Zimbra is an open source server and client technology for next-generation enterprise messaging and collaboration. Please see www.zimbra.com for the latest news and downloads.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 2
    Open Project Services (OPS) is a project collaboration platform, integrating server components such as e-mail, calendaring, timesheets, documents, knowledge, etc. with standards complient clients. It consists of a project server and a set of client plugi
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    Rendezvous is an open source web-based collaboration suite including e-mail, calendar, tasks, contacts, documents, projects, rss reader and mobile access. It features a rich user interface based on Adobe Flex.
    Downloads: 0 This Week
    Last Update:
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