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    • New comment by bobjonkman 29 November 2022
      @clacke Our #KWNPSA user group chatted with the #GetTogether developer a few months ago. He said demand for self-hosted G2G instances was minimal, and event interchange even more minimal. So #ActivityPub support on G2G has stalled, and he considers G2G more or less stable and mature.
    • New comment by bobjonkman 28 November 2022
      @lnxw48a1 ...then to Debian with a MATE desktop in 2020. Far less faffing about, finally being productive. Sometimes...
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    • New comment by bobjonkman 28 November 2022
      @lnxw48a1 I switched to Ubuntu-MATE when they insisted in the Unity desktop, then to Debiab
    • New comment by bobjonkman 28 November 2022
      @lnxw48a1 Ubuntu 22.04 has way too much reliance on snaps. Can't even get a regular install of Firefox, f'rinstance, only a snap.
    • Delete 28 November 2022
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    • Favorite 12 November 2022
      bobjonkman favorited something by lnxw48a1: Oh, look! Evan has his own #Mastodon server now. https://prodromou.pub/@evan
    • bobjonkman repeated a notice by lnxw48a1 12 November 2022
      RT @lnxw48a1 Oh, look! Evan has his own #Mastodon server now. https://prodromou.pub/@evan
    • New note by bobjonkman 30 September 2022
      That "aura" around bright objects is what I saw when I first got a cataract (clouding of the lens). It wasn't bad at first, and only in one eye, so I let it go until my vision was totally obscured in that eye. Don't do that. Get your eyes checked, and maybe a referral to […]
    • Favorite 30 September 2022
      bobjonkman favorited something by hypolite: Ok, that’s what I thought, thank you for the explanations. When I wear the new glasses, anything beyond a couple of feet is doubled until my eyes adjust which takes more time than with my current glasses, and then it still is almost imperceptibly blurry, although the comparison between the […]

Calendaring Server Software

Posted by Bob Jonkman on 12th October 2012

I’m looking for a free/libre calendar server to run on a GNU/Linux server.

It needs to have CalDAV connectivity, so that I can use Evolution, Sunbird or Thunderbird/Lightning as my only client. Ideally, it will also have a Web interface for both administration and calendar viewing, exports to iCal (.ics) files, supports iMIP, and offers Atom/RSS feeds of calendar items.

Here’s what I’ve found so far. If you know of others, please leave a comment.

There’s also a list at CalConnect’s CalDAV Servers

Name WebUI Export iCal (.ics) CalDAV
Admin View Edit iCal (.ics) iMip Atom/RSS
Kolab              
DAViCal              
phpGroupWare       No     No
Chandler Project              
Bedework              
Zimbra Yes, but.. Yes Yes Yes   No Outlook only
EGroupware Community Version              
WebCalendar             No
Darwin Calendar Server              
Tryton Calendar              
ownCloud Yes Yes, but not Public, Read-only Yes No No No Yes
Citadel ? ? ? ? ? ? ?
Baikal ? ? ? ? ? ? ?
Horde ? Yes Yes Yes ? Maybe Yes

WordPress Plugins

The other calendars I’ve been trying are WordPress plugins. There is much promise in their description blurbs, but so far I’ve rejected most:

Name Export iCal (.ics) CalDAV Notes
iCal (.ics) iMip Atom/RSS
Calendar JCM         Rejected: no longer supported
Event Calendar / Scheduler         Rejected: missing .php modules when running
The Events Calendar         Rejected
WP Events Calendar Yes, with iCal for Events Calendar plugin   No No Works
My Calendar Only lists current month   Partial  
CalPress Pro ? ? ? ? This is a commercial plugin;
All-in-One Event Calendar by Timely By tweaking the “Add to Google” URL ? ? WebCal Possible privacy concern
  • 11 January 2011
    Originally posted
  • 26 March 2011
    Added Linuxaria’s suggestions
  • 16 April 2011
    Added WordPress plugin info; added CalDAV column; filled in some attributes
  • 11 October 2012
    Updated feature list for Zimbra
    I’ll be writing a review of Zimbra Open Source Edition soon, detailing some of my experiences (eg. requires Flash for the administrative Web interface)
  • 12 October 2012: Put WordPress calendars in table format, added My Calendar
  • 5 November 2012: Added Dosch’s suggestions
  • 16 November 2012: @Encyclomundist dents about Citadel.org
  • 26 September 2013: I’ve started to use ownCloud 5.0 as a calendar repository accessed with Lightning using WebCal. ownCloud doesn’t publish an iCal feed or have a public read-only view, but since it’s Free Software constantly under improvement I’ll stick with it for a while.
  • 9 November 2013: I think @postblue turned me on to Baikal: Using #Baikal to sync tasks, contacts and calendars
  • 9 November 2013: I’m now using Timely All-In-One on some blogs, will be upgrading others. It’s not the perfect iCal plugin, but the best one yet.
  • 9 November 2013: @McScx and @lxw37 both introduce me to Horde.
  • 13 August 2015: Just discovered Blaise Alleyne’s post on Degooglifying (Part IV): Calendar. This is pretty much the same solution I’ve settled on; ownCloud + Thunderbird and Lightning. I’m not quite as advanced as Blaise on the mobile front, though.

This is a “living” post, so it will float back to the top of the blog as I update it.

–Bob.

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