KOrganizer
Calendar & ContactsCalendar and scheduling component of KDE Kontact
Replaces Outlook Calendar
1 self-hosted Outlook Calendar alternatives
Outlook Calendar is a popular proprietary tool in the calendar & contacts space. These open-source apps let you replace Outlook Calendar with software you host and control yourself.
Best self-hosted Outlook Calendar alternatives
No apps match these filters.
Switching from Outlook Calendar
Moving off Outlook Calendar means trading a managed subscription for a service you run yourself. The payoff is ownership: no per-seat pricing, no vendor lock-in, and full control of your data. Start with the option above that matches your setup-difficulty comfort level — every app links to a detailed specs page and head-to-head comparisons.