ZeroMQ

The ØMQ Process: C4

When we say ØMQ, we sometimes mean libzmq, the core library. In early 2012, we synthesized the libzmq process into a formal protocol for collaboration that we called the Collective Code Construction Contract, or C4. You can see this as a layer above the GPL. In fact, libzmq doesn’t quite stick to C4, because for historic reasons we use Jira instead of the GitHub issue tracker. Apart from that, these are our rules, and I’ll explain the reasoning behind each one.

C4 is an evolution of the GitHub Fork + Pull Model. You may get the feeling I’m a fan of Git and GitHub. This would be accurate: these two tools have made such a positive impact on our work over the last years, especially when it comes to building community.