A fast, friendly, functional language.

Iggy is the persistent message streaming platform written in Rust, supporting QUIC, TCP and HTTP transport protocols, capable of processing millions of messages per second.

OpenMetadata is a unified metadata platform for data discovery, data observability, and data governance powered by a central metadata repository, in-depth column level lineage, and seamless team co…

PRQL is a modern language for transforming data — a simple, powerful, pipelined SQL replacement

Apache Calcite

Java binding to Apache DataFusion

The Java gRPC implementation. HTTP/2 based RPC

The Feldera Incremental Computation Engine

Hybrid in-memory and disk cache in Rust

A blazingly fast multi-language serialization framework powered by JIT and zero-copy.

egg is a flexible, high-performance e-graph library

An educational OLAP database system.

SeaTunnel is a next-generation super high-performance, distributed, massive data integration tool.

The leading data integration platform for ETL / ELT data pipelines from APIs, databases & files to data warehouses, data lakes & data lakehouses. Both self-hosted and Cloud-hosted.

Netty project - an event-driven asynchronous network application framework

Push acceptor for ephemeral and batch jobs.

Apache Calcite Avatica

JDK main-line development https://openjdk.org/projects/jdk

Cloud-native SQL stream processing, analytics, and management. KsqlDB and Apache Flink alternative. 🚀 10x more productive. 🚀 10x more cost-efficient.

Apache Arrow DataFusion SQL Query Engine

CMU-DB's Cascades optimizer framework

The testing ground for the future of portable SIMD in Rust

DuckDB is an in-process SQL OLAP Database Management System

A cloud native embedded storage engine built on object storage.

Apache YuniKorn Core

Apache Iceberg

An observability database aims to ingest, analyze and store Metrics, Tracing and Logging data.