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ClickHouse/ClickHouse

C++

ClickHouse® is a real-time analytics database management system

StarRocks/starrocks

Java · Trending

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.

apache/cloudberry

C

One advanced and mature open-source MPP (Massively Parallel Processing) database. Open source alternative to Greenplum Database.