Try it out

There are several commercial solutions which allow embedding of calendars into my website. I only have a link to an ICS file and want to show a nice-looking calendar on my site. Browser-only calendars usually have the problem that many ICS files can not be accessed (such as ownCloud/nextCloud in my case). I also want to be in control over who knows the people who visit the site and not pass everything to Google. This is a solution in my case which I share with the world. You are free to use it or deploy your own, modify or share it. It works offline and in company networks, too.

Features

• Embedded calendar
• Choice of time zone
• ICS link, best multiple
• month/week as a view
• name, time of event, link?
• showing the time span
• styling of choice (icon, color, font, ...)

You can deploy the app using Heroku. There is a free plan.

Heroku uses gunicorn to run the server, see the Procfile.

• https://serverfault.com/questions/142598/open-source-web-application-for-viewing-ics-calendars
• https://stackoverflow.com/questions/300849/html-viewer-for-ics-ical-files
• https://phpicalendar.net
  • https://sourceforge.net/projects/phpicalendar/
• https://icalendar.readthedocs.io/
• https://github.com/rianjs/ical.net
• https://stackoverflow.com/questions/4671764/is-there-a-javascript-calendar-that-takes-an-ical-link-as-input-to-display-event
• https://www.webgui.org/content-managers-guide-wiki/calendar
• https://www.quora.com/What-calendars-can-I-embed-in-my-website-that-arent-Google-Calendar

Hosts

• https://www.chronoflocalendar.com/
• with API: https://www.instantcal.com/api.html
• Wordpress: https://de.wordpress.org/plugins/all-in-one-event-calendar/

Sources/Libs

• https://stackoverflow.com/questions/9072802/is-there-an-open-source-javascript-calendar-that-supports-built-in-event-detail#9072985

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• Python3 and the packages in requirements.txt
  • Flask
• DHTMLX scheduler
• python-recurring-ical-events

1. Optional: Install virtualenv and Python3 and create a virtual environment.

   virtualenv -p python3 ENV
   source ENV/bin/activate
   

2. Install the packages.

   pip install -r requirements.txt
   

3. Start the app.

   python3 app.py
   

For the configuration of the app through environment variables, see the app.json file.

• calender_merger for merging several ICAL files into one
• ical-filter for filtering events in an ICAL file and providing the selection as file
• Wordpress all in one event calendar
• My Mailbox Calendar