Is Thunderbird/Sunbird the only one that can read and write .ics files on network folder?

Question

I have an ics calendar file that is store on a network folder. Thunderbird/Sunbird can read and write entries very well.

Now i am looking for an alternative. It seem to be that Thinderbird (with Lighning) or Sunbird, is the only one that can write ics file. Outlook, e.g can only read the calendar file.

Answer 1

Outlook can create ICS files just fine either through its UI (File | Save As) or programmatically (AppointmentItem.SaveAs(..., olICal)