What is the difference between zenon.network and zenon.org?

In short, No. zenon.network and zenon.org are different.

Zenon Network (zenon.network) is an L1 decentralized blockchain protocol supported and maintained by an open community of contributors.

Zenon Org (zenon.org) is a private organization that runs multiple Pillars (validators) in the Zenon Network ecosystem. Zenon Org has a self-stated focus of performance marketing and have provided closed-source proprietary tooling.