ElasticSearch : [Founder] ElasticSearch is an open source, distributed, RESTful Search Engine built on top of Lucene.

Compass : [Founder] Compass is an open source project built on top of Lucene aiming at simplifying the integration of search into any Java application.

GigaSpaces : [Technical Director / Coder] GigaSpaces eXtreme Application Platform (XAP) is a high-end application server with the world’s leading in-memory data grid built-in.