Conductor is a microservices orchestration engine.

The Metadata Platform for your Data and AI Stack

Use SQL to query Elasticsearch

Apache Ignite

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

🐘 Elasticsearch real-time search and analytics natively integrated with Hadoop

Strata is the new open source analytics and market risk library from OpenGamma

[RETIRED] Open source e-commerce and marketplaces made simple on the JVM