Model Registry With Versioning And Stage Transitions

Open-source ML lifecycle platform — experiment tracking, model registry, serving, LLM tracing.

Unique: Implements a lightweight model registry as a database-backed service (separate from artifact storage) that tracks model versions, stage transitions, and metadata independently of the training system. Uses semantic aliases (e.g., 'production', 'staging') and webhook-based stage transitions to integrate with external CI/CD systems, while maintaining immutable version history for compliance.

vs others: Simpler than BentoML's model store (no Docker image building required) and more integrated with Databricks than standalone solutions, with native support for model comparison and stage-based serving.