Hello Is there a free and/or opensource calendar application? Can't find one on sourceforge. Tried mozilla sunbird. But I want to do this: I have dropbox on two computers connected by short range wireless/ethernet internet. Person on computer a wants to make a calendar file, save it, drop into dropbox, then i see it on computer b, and i make the file public and email a link to business colleagues with the schedule calendar file. I can't get this to occur with mozilla sunbird. Please don't suggest thunderbird/lightning. I use that. But he can't email. He needs an idiot level calendar application for windows. Sunbird saves as weird.ics files that I can't open. If I can't open them how will anyone else use them? Does such a calendar application exist? Thank you Andrew