I needed to sync a team of PC’s and Mac’s and iPhone, Blackberry phones. This was not fun, for a while I used basecamp to do this in a roundabout “4 years ago” kinda way…If you are a PC user, use the Google Calender CalDAV method so that you can deliver a shared and 2-way editable calender to both Mac and PC users without excuses..
- Sync and post ical entries across multiple computers
- Syncs ical to iPhone
- Share to both Mac and PC calenders
- Free and Reliable
Well it look likes Google stepped up to the plate here. Google Calender mixed with CalDAV is the answer.
I have found this combo more usable than any other free solution. It can be totally web based, or native across a diverse range of both desktop and mobile platforms.

