The largest, actively contributing companies include PANTHEON.tech⁣,[10] Orange, Red Hat, and Ericsson.

[11] At the time of the Carbon release in May 2017, the project estimated that over 1 billion subscribers accessing OpenDaylight-based networks, in addition to its usage within large enterprises.

Part of the concept of modularity are over 50 projects, which address & extend the capabilities of networks managed by OpenDaylight.

Each project has a formal structure, teams and meetings to discuss releases, functionality and code.

Originally there were three tiers of membership for OpenDaylight: Platinum, Gold and Silver, with varying levels of commitment.