olap

duckdb/duckdb

+264

DuckDB is a high-performance analytical database system

ClickHouse

+123

ClickHouse® is a real-time analytics database management system

heavydb

+41

HeavyDB (formerly MapD/OmniSciDB)

datafusion

+37

Apache DataFusion SQL Query Engine

apache/doris

+28

Apache Doris is a real-time analytics and hybrid search database for AI agents.

paradedb

+25

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

starrocks

+19

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.

databend

+13

Data Agent Ready Warehouse : One for Analytics, Search, AI, Python Sandbox. — rebuilt from scratch. Unified architecture on your S3.

oceanbase

+9

OceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.