Flower

An open-source federated AI framework with a clean split between simulation and deployment runtimes (SuperLink, SuperExec, ServerApp, SuperNodes). Framework-agnostic across PyTorch, TensorFlow, Hugging Face, scikit-learn, JAX, XGBoost. Public docs show secure aggregation, differential privacy, TLS, SuperNode authentication, enterprise audit logging and OIDC/OpenFGA authorisation. A strong "missing middle" bridge between research and operations — but not the only answer.

Relates to: The federation layer, Flower Labs.