shortage of network engineering projects named after the term Open these days. Besides the Open vSwitch and OpenFlow projects, that we have already studied in the last two chapters, there are community driven projects such as Open Network Operating System (ONOS, http://onosproject.org/), OpenDaylight (https://www.opendaylight.org/), and OpenStack (https://www.openstack.org/). Furthermore, there are other projects that are open in nature but arguably heavily backed or bootstrapped by commercial companies (such as Ryu with NTT); for example OpenContrail (http://www.opencontrail.org/) with Juniper Networks and Open Compute Project (http://www.opencompute.org/) bootstrapped by Facebook. There is also the Open Networking User Group (ONUG, https://opennetworkingusergroup.com/) that, according to their mission statement, enable greater choices and options...
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