4 open source alternatives for Google Calendar: 
For many of us, our calendar is our lifeblood. Without it, we would be lost, perhaps both literally and figuratively.
While some people can get away with a wall calendar or a paper day planner to organize their schedule, a whole lot of us have turned over the process of managing time allotments to a digital calendar. In truth, most of us are juggling quite a few calendars from both our work and personal lives, and often a few other organizations that we’re involved with, including anything from non-profits to tech meetups to social clubs.
read more: Opensource.com Jason Baker
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