SHSelfHostIndex

Alf.io vs Tasks.org Server alt nono Calendarserver

A side-by-side comparison of two self-hosted calendar & contacts options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
AL Alf.io Ticket reservation system VS TA Tasks.org Server alt nono Calendarserver Standards-compliant calendar and scheduling server
FeatureAlf.ioTasks.org Server alt nono Calendarserver
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-3.0Apache-2.0
LanguageJavaPython
Setup difficultyMediumHard
Min. RAM512 MB512 MB
Deploymentbare-metalbare-metal, source
GitHub stars★ 1,601★ 506
First released20252007
Replaces—Google Calendar, Exchange

Why pick each one

Choose Alf.io if…

  • Released under the GPL-3.0 license
  • Active community (1.6k GitHub stars)
  • Written in Java
  • Lightweight — runs in 512 MB RAM
Alf.io details

Choose Tasks.org Server alt nono Calendarserver if…

  • Released under the Apache-2.0 license
  • Written in Python
  • Lightweight — runs in 512 MB RAM
Tasks.org Server alt nono Calendarserver details

Frequently asked questions

Is Alf.io or Tasks.org Server alt nono Calendarserver better?

Alf.io is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Tasks.org Server alt nono Calendarserver if its specific feature set fits your needs better.

Are Alf.io and Tasks.org Server alt nono Calendarserver free and open-source?

Yes. Alf.io is licensed under GPL-3.0 and Tasks.org Server alt nono Calendarserver under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Alf.io and Tasks.org Server alt nono Calendarserver with Docker?

Alf.io: check the project docs for container support. Tasks.org Server alt nono Calendarserver: check the project docs for container support.

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