JavaRebel is a JVM plugin (-javaagent) that enables to reload changes made to Java class files on-the-fly, saving developers the time that it takes to redeploy an application or perform a container restart.
Simple Persistence for Java is an open source object-relational persistence library that uses a custom query language and built-in database support to simplify object persistence in Java applications.
Zebra is a workflow engine - originally developed to fill in the gaps in some commercial and open source workflow engines. The key differences between it and other workflow systems are
* Able to model all the workflows described in workflow patterns
* An easy to use GUI designer
* Interfaced persistence layer
* OO Design
* Integration component for Turbine web applications
The mainframe is cool again as shops move to consolidate servers and run enterprise systems on a single platform with robust diversification. Some are even speculating that a rebirth is occurring and are talking about Mainframe 2.0.