Neptune.ai is a metadata store and experiment tracking platform designed for machine learning teams. It helps log, track, and compare ML experiments, model versions, and training metadata in one place. Neptune offers customizable dashboards, collaboration features, and integrates with popular ML frameworks like TensorFlow and PyTorch. It supports both cloud and self-hosted deployments, making it scalable for individual researchers and large teams. Neptune.ai simplifies managing experiments and boosts reproducibility in MLOps workflows.