OpenStack is an open cloud computing platform founded by Rackspace and backed by NASA, see openstack.org. It's to counter the proprietary cloud offerings of Amazon's AWS and Microsoft's Azure. Ok, so maybe this doesn't exactly go under the 'operating systems' menu item, but it's pretty close.  From their meetup page:

This is the Atlanta OpenStack developer Meetup. We are a group of free software developers who are passionate about working together to help make the Openstack project a success!

Can't wait for the next meetup? Join us on IRC! We hang out on Freenode at #openstack-atlanta. See the Atlanta OpenStack Meetup page.

Upcoming OpenStack Meetups

Events - Atlanta OpenStack Meetup Group

Events - Atlanta OpenStack Meetup Group
  • Atlanta OpenStack Meetup Group

    In addition to the annual celebration of the launch of the OpenStack project, this month Richard Coleman, System Engineering Architect at Virtustream, Inc., will be presenting "Introduction to Swift Object Store". Come hear Richard and help us celebrate OpenStack's 5th birthday!

    Atlanta, GA 30307 - USA

    Thursday, July 16 at 7:00 PM

    Attending: 18

    Details: http://www.meetup.com/openstack-atlanta/events/223011563/

  • Atlanta OpenStack Meetup Group

    Stay tuned for updates closer to the event's date!

    Atlanta, GA 30322 - USA

    Thursday, August 20 at 7:00 PM

    Details: http://www.meetup.com/openstack-atlanta/events/qlgkffytlbbc/

  • Atlanta OpenStack Meetup Group

    Stay tuned for updates closer to the event's date!

    Atlanta, GA 30322 - USA

    Thursday, September 17 at 7:00 PM

    Details: http://www.meetup.com/openstack-atlanta/events/qlgkffytmbwb/