Orient Technologies - Open source solutions built around the Orient DB. Main - orient - Main WIKI page - NoSQL document database light, portable and fast. Supports ACID Tx, Indexes, asynch queries, SQL layer, clustering, etc. DocumentDatabase - orient - Document Database usage through Java APIs - NoSQL document database light, portable and fast. Supports ACID Tx, Indexes, asynch queries, SQL layer, clustering, etc. ObjectDatabase - orient - Object Database usage through Java APIs - NoSQL document database light, portable and fast. Supports ACID Tx, Indexes, asynch queries, SQL layer, clustering, etc. GraphDatabase - orient - Graph Database - NoSQL document database light, portable and fast. Supports ACID Tx, Indexes, asynch queries, SQL layer, clustering, etc.