Delta Lake license, foundation and stars

Table formats · Apache 2.0 (open source) · LF AI & Data · backed by Databricks · 9,073 stars

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An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

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Project	License	Stars	Per week	Latest release
Apache IcebergAn open table format at the Apache Software Foundation, written in Java.ApacheApache 2.0	Apache 2.0	9,422	+22	apache-iceberg-1.11.0May 20, 2026
Apache HudiUpserts, Deletes And Incremental Processing on Big Data.ApacheApache 2.0	Apache 2.0	6,373	+14	release-1.2.1Sep 24, 2026
Apache PolarisApache Polaris, the interoperable, open source catalog for Apache Iceberg.Apache 2.0	Apache 2.0	2,109	+7	-
Apache CarbonDataHigh performance data store solution.Apache 2.0	Apache 2.0	1,454	+0	-