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    • Delete 27 August 2023
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    • New note by bobjonkman 3 August 2023
      From a few years ago... All gone now, and I promised $SPOUSE it would never come back. https://gs.jonkman.ca/attachment/221480
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      bobjonkman favorited something by clacke: I tried for over four decades to grow an impressive personality, but it was a lot of effort and not much payoff, so now I'm just trying to grow an impressive beard instead.
    • bobjonkman repeated a notice by clacke 3 August 2023
      RT @clacke I tried for over four decades to grow an impressive personality, but it was a lot of effort and not much payoff, so now I'm just trying to grow an impressive beard instead.
    • bobjonkman repeated a notice by clacke 27 July 2023
      RT @clacke did you watch Oppenheimer, the film about the moral implications of the things we create, starring an actor who also played a Gotham City psychiatrist who went insaneordid you watch Barbie, the film about the moral implications of the things we create, starring an actress who also played a Gotham City psychiatrist who […]
    • Favorite 27 July 2023
      bobjonkman favorited something by clacke: did you watch Oppenheimer, the film about the moral implications of the things we create, starring an actor who also played a Gotham City psychiatrist who went insaneordid you watch Barbie, the film about the moral implications of the things we create, starring an actress who also played a Gotham […]
    • New comment by bobjonkman 29 June 2023
      @steve Wait, you or Dr. Cooley are at Perimeter? Giving any public lectures? If so, I'll hop on my bike to attend! @Perimeter
    • bobjonkman repeated a notice by steve 29 June 2023
      RT @steve From jodi on Mastodon: I’m looking forward to meeting students at TRISEP 2023 being held @Perimeter!
    • New note by bobjonkman 8 June 2023
      Several other authors of software that accesses the Twitter API have come to that conclusion as well. When #Twidere, my phone app to access Twitter stopped accessing Twitter back in January I pretty much abandoned Twitter. I still check Twitter with its WebUI, less than once a week, but I no longer post or engage […]
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      bobjonkman favorited something by steve: I finally had a chance to figure out why my social bridging software was no longer able to talk to Twitter. Indeed, it's because under Twitter's new leadership, python-twitter has been deemed as violating something in their terms of service. It says I can submit a ticket, but they make […]

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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