Apache Drill is a distributed MPP query layer for self describing data
DBMS supporting graph, document, full-text and geospatial models
Provide support to increase developer productivity in Java
Relative Examples and Resources of iBoxDB, etc...
eXist-db is a feature rich Open Source native XML database
CrNiCKL (chronicle) is a Java database for time series
Automatic, in-memory NoSQL composite-indexing of a Java Collection
Feature Toggle for Java Platform made easy
giServer the easy to use and extensible batch and integration server
Simple Workflow is a free workflow engine written in Java.
a Domain Driven Design + CQRS + EventSource java framework
ChronoDB is a data manager for generic time series.
JavaEE 6, JBoss AS7 conceptual demonstration project
HA Java Server - distributed Execution, noSQL, MapAndReduce and Grid
Yuzz NoSQL Compile-Time Checked HTML Web Framework