Decsync Calendar Sync
Calendar & ContactsFile-based calendar and contacts synchronization
Replaces Google Calendar
Best No-Database Calendar & Contacts for self-hosting
The 4 best No-Database calendar & contacts you can self-host, ranked by community traction.
Framadate
Calendar & ContactsOnline polling and meeting scheduling tool
Replaces Doodle
Xandikos
Calendar & ContactsGit-backed CalDAV and CardDAV server
Replaces Google Calendar, iCloud
InfCloud
Calendar & ContactsWeb client for CalDAV and CardDAV servers
Replaces Google Calendar web
No apps match these filters.
Every option here is open-source and self-hostable, tagged No-Database within the calendar & contacts category. Compare them on the individual app pages for setup difficulty and resource requirements.