ADApache 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 ASApache 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 DDuckDB Foundation / DuckDB Labs · Analytical engines & OLAP
In-depth entry In-process analytical SQL database that queries Parquet, CSV and Arrow data directly from Python, R, Node or the CLI
MITOpen sourceFreeLocalSelf-hostedNov 2, 2026