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Apache Polaris vs Lakekeeper

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Apache PolarisLakekeeper
LanguageJavaRust
LicenceApache-2.0Apache-2.0
Stars2.1k1.5k
Latestapache-polaris-1.8.0v0.14.1
Last push2026-10-192026-10-17
Release cadenceabout 38 days between releasesabout 8 days between releases
Active contributors47+ commit authors on the default branch in the last 90 days17 commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace AWS Glue Data Catalog. Alternatives to AWS Glue Data Catalog →

    PartialApache PolarisIceberg REST catalog that works across engines instead of tying to AWS services.

    PartialLakekeeperIceberg REST catalog that works across engines instead of tying to AWS services.

  • Both replace Unity Catalog. Alternatives to Unity Catalog →

    PartialApache PolarisOpen Iceberg REST catalog; it covers tables and access control but not Delta or ML assets.

    PartialLakekeeperIceberg REST catalog with access control and credential vending; Iceberg tables only.