Jboss Infinispan
Infinispan (formelly JBoss Cache) is a distributed cache system. I have proposed to enhance the cache system by allowing it to works without Garbage Collector using shared memory. Using this approach, it might also being use as a way for a system to interact quickly on a single computer with multiple JVM. I’m currently contributing around that.
Apache Jackrabbit
Jackrabbit is an JSR-170, JSR-283 implementation of a content repository where you can store easily many kind of document, structured or non-structured data. Having choose this technology in our dev teams, I have dig and corrected quite a complited bug involving JTA and Jackrabbit :
Log4cxx
I’ve been contributing few bug fixes over the past as we were using it in one of our C++ product.