ClickHouse® is a real-time analytics database management system
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DuckDB is a high-performance analytical database system
Apache Doris is a real-time analytics and hybrid search database for AI agents.
The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.
OceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.
One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.
chDB is an in-process OLAP SQL Engine 🚀 powered by ClickHouse
Apache DataFusion Ballista Distributed Query Engine
One advanced and mature open-source MPP (Massively Parallel Processing) database. Open source alternative to Greenplum Database.
HammerDB: The industry standard open-source database benchmark
An open-source columnar data format designed for fast & realtime analytic with big data.
An experimental embedded SQL engine in C++20. Query Parquet, CSV, JSON, Arrow, Avro, SQLite, and Excel files directly with SQL, in-process. Early-stage.
Common Lisp CFFI wrapper around the DuckDB C API
Apache Druid client for Elixir