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Apache DataFusion

Apache Software Foundation · Analytical engines & OLAP

Extensible Rust query engine built on Apache Arrow offering SQL and DataFrame APIs, Parquet readers and an optimizer for embedding in data systems

Apache-2.0Open sourceFreeLocalNov 2, 2026

Apache Spark

Apache Software Foundation · Analytical engines & OLAP

Distributed data processing engine with DataFrame and SQL APIs in Python, Scala, Java and R, plus structured streaming and MLlib

Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026

Dask

Dask developers (open-source community) · Distributed & parallel computing

Python library for parallel and distributed computing that scales pandas, NumPy and custom task graphs from a laptop to a cluster

BSD-3-ClauseOpen sourceFreeLocalSelf-hostedNov 2, 2026

Delta Lake

Delta Lake project (Linux Foundation; created by Databricks) · Data catalogs & formats

Open table format with a transaction log over Parquet files, created by Databricks and hosted by the Linux Foundation, with Spark, Rust and Python implementations

Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026

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