I have a webcal url, something like webcal://myservice.com/foobar. When my "Windows friends" click on such a link in their browsers, or paste the url into the address bar, there is an open dialogue, where they can choose Outlook.
What is the equivalent on Ubuntu? I have installed Thunderbird, and then the Lightning extension. But I can't find a way of adding the webcal/ical url from within Thunderbird/Lightning, and Firefox does not offer opening the link in Thunderbird.
It does offer opening it with "30 Boxes". Apparently this is a webservice, which is somehow offline today, and therefore I can't use it.
Please let me know the easiest way of opening this webcal/ical thing, to see what appointments and stuff is in there.