While the Helix Core Server itself is not Open Source, much of the surrounding tooling is. E.g., see the code here: https://swarm.workshop.perforce.com/user/p

While the Helix Core Server itself is not Open Source, much of the surrounding tooling is. E.g., see the code here: https://swarm.workshop.perforce.com/user/perforce_software https://swarm.workshop.perforce.com/user/perforce_software I don't think it'd be fair to say it's "fully" closed-source.