ADApache DataFusionApache Software Foundation · Analytical engines & OLAPExtensible Rust query engine built on Apache Arrow offering SQL and DataFrame APIs, Parquet readers and an optimizer for embedding in data systemsApache-2.0Open sourceFreeLocalNov 2, 2026
ASApache SparkApache Software Foundation · Analytical engines & OLAPDistributed data processing engine with DataFrame and SQL APIs in Python, Scala, Java and R, plus structured streaming and MLlibApache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026
DLDelta LakeDelta Lake project (Linux Foundation; created by Databricks) · Data catalogs & formatsOpen table format with a transaction log over Parquet files, created by Databricks and hosted by the Linux Foundation, with Spark, Rust and Python implementationsApache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026