CClickHouse, Inc. · Analytical engines & OLAP
In-depth entry Open-source columnar OLAP database server for fast aggregations over billions of rows, with MergeTree storage, SQL and a managed ClickHouse Cloud
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 PPython Software Foundation · Programming languages & runtimes
In-depth entry General-purpose, dynamically typed programming language with a large standard library and the dominant ecosystem for data science and machine learning
PSF-2.0Open sourceFreeLocalSelf-hostedBroken