Some of them were originally independent groups. The Open Network Operating System (ONOS) for example, was founded by On.lab. But in October, it became part of the Linux Foundation. The Linux Foundation was already hosting the OpenDaylight Project , which some considered a rival to ONOS. But the two groups seem to be happily coexisting under the same host.
Recently, though, the pace of networking projects associating with the foundation has picked up. Here is a trend line of Linux Foundation affiliations this year:
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