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

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Apache DataFusion SQL Query Engine

OctoSQL is a query tool that allows you to join, analyse and transform data from multiple databases and file formats using SQL.

M3 monorepo - Distributed TSDB, Aggregator and Query Engine, Prometheus Sidecar, Graphite Compatible, Metrics Platform

A MySQL-compatible relational database with a storage agnostic query engine. Implemented in Go.

Apache DataFusion Ballista Distributed Query Engine

Simple and powerful toolkit for BoltDB

The OpenCog (hyper-)graph database and graph rewriting system

Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine

A golang expression evaluator & Library to build SQL query engine based functionality.

Embedded relational database and native Rust data API.

📬 A knowledge graph querying framework for JavaScript

AutoFilterer is a mini filtering framework library for dotnet. The main purpose of the library is to generate LINQ expressions for Entities over DTOs automatically. The first aim is to be compatible with Open API 3.0 Specifications

Pushdown cache for DataFusion

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.

GigAPI is a Timeseries lakehouse for real-time data and sub-second queries, powered by DuckDB OLAP + Parquet Query Engine, Compactor w/ Cloud-Native Storage. Drop-in FDAP alternative ⭐

Apache Doris MCP Server

Federated mysql compatible proxy to elasticsearch, mongo, cassandra, big-table, google datastore

Databend 内幕大揭秘