Catalog type	Docs / example	Comments
	REST – Lakekeeper	LINK	[Officially Supported] Rust-native catalog with optimistic locking; Helm chart available for K8s.
	REST - Unity	LINK	[Supported and tested] Unity Catalog (Databricks) with Personal Access Token authentication.
	REST – Gravitino	LINK	[Supported, Yet to be tested] Uses standard Iceberg REST; Gravitino adds multi-cloud routing.
	REST – Nessie	LINK	[Supported, Yet to be tested] Time-travel branches/tags; supply nessie.endpoint in destination.json.
	REST – Polaris	LINK	[Supported, Yet to be tested]
	Hive Metastore	Hive catalog config	Classic HMS; good fit for on-prem Hadoop or EMR.
	JDBC Catalog (Postgres/MySQL)	JDBC catalog sample	Stores Iceberg metadata in an RDBMS(Postgres); easiest to spin up locally with Postgres.
	AWS Glue Catalog	Glue catalog IAM & config	Best choice on AWS; lets Athena, EMR, and Redshift query the same tables instantly.
	Azure Purview	Not Planned, submit a request
	BigLake Metastore	Not Planned, submit a request