khal
Calendar & ContactsCommand-line calendar built on CalDAV
Replaces Google Calendar
Best Single-User Calendar & Contacts for self-hosting
The 5 best Single-User calendar & contacts you can self-host, ranked by community traction.
Etar
Calendar & ContactsOpen-source Android calendar app that syncs over CalDAV
Replaces Google Calendar
calcurse
Calendar & ContactsText-based calendar and scheduling application
Replaces Google Calendar
Xandikos
Calendar & ContactsGit-backed CalDAV and CardDAV server
Replaces Google Calendar, iCloud
GNOME Calendar
Calendar & ContactsSimple desktop calendar with CalDAV support
Replaces Google Calendar
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| khal | Read-the-docs project | Medium | 64 MB | MIT | 3,073 |
| Etar | Read-the-docs project | Medium | 256 MB | GPL-3.0 | 2,620 |
| calcurse | Read-the-docs project | Easy | 16 MB | BSD-2-Clause | 1,308 |
| Xandikos | Under-an-hour setup | Medium | 64 MB | GPL-3.0 | 609 |
| GNOME Calendar | Read-the-docs project | Easy | 256 MB | GPL-3.0 | 300 |
Quick picks
- Most adopted: khal (3,073 GitHub stars).
- Lightest footprint: calcurse (from 16 MB RAM, against 256 MB for the heaviest here).
- Licensing: 3 of 5 use GPL-3.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged Single-User within the calendar & contacts category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.