MonetDB

MonetDB is a high-performance relational database system for analytics. It provides a robust SQL interface with full-ACID properties and supports advanced SQL standards such as SQL:1999 ROLLUP, CUBE, GROUPING SETS, SQL:2003 MERGE, and SQL:2011 window functions. Its performance comes from a columnar storage model and parallel execution plans that leverage modern multi-core CPUs for analytical workloads. As an open-source project, MonetDB offers JDBC/ODBC drivers and language interfaces, enabling flexible integration and a vibrant community-driven ecosystem.

• High-performance analytics with a columnar storage model and parallel execution on multi-core CPUs.
• SQL-compliant with full-ACID transactions and support for advanced standards (ROLLUP, CUBE, GROUPING SETS, MERGE, window functions).
• Flexible extensibility with user-defined functions (UDFs) and multiple language interfaces; includes JDBC and ODBC drivers.
• Open-source licensing under Mozilla Public License 2.0 with an active community and ongoing production-ready enhancements.

• Open-source and freely available to deploy and modify.
• Optimized for analytics and data warehousing workloads with strong performance characteristics.
• Rich SQL feature support and ACID compliance for reliable analytics pipelines.
• Mature, research-driven foundation with cross-language integration and ongoing community-driven improvements.

• Free to use under Mozilla Public License 2.0 (MPL 2.0). Older license versions (MonetDB Public License v1.1) apply to earlier releases. No commercial pricing is listed on the site; MonetDB is promoted as open-source software.