The official home of the Presto distributed SQL query engine for big data

Apache ZooKeeper

Apache Iceberg

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

A High Dynamic Range (HDR) Histogram

Apache Polaris, the interoperable, open source catalog for Apache Iceberg

Apache XTable (incubating) is a cross-table converter for lakehouse table formats that facilitates interoperability across data processing systems and query engines.

Scheduler (HTTP API and webapp) for running Mesos tasks—long running processes, one-off tasks, and scheduled jobs. #hubspot-open-source

MacroBase: A Search Engine for Fast Data

A cluster consistency platform

TAPIR distributed transactional storage system

Java classes designed with optimizable object layout in mind

Control thread affinity for Java

Transactional Support for HBase (Mirror of https://github.com/apache/incubator-omid)

Transactional functions-as-a-service for database-oriented applications.

Elastic ephemeral storage

Distributed Java Collections for ZooKeeper

A simple Java API and command line interface for importing, managing and retrieving data from HBase.

Data Management + Feed Processing Platform over Hadoop

Next generation feed processor