... I send out a list of most interesting libraries and apps in the "Java" section to about 1100 subscribers.
Do you want it too?
Open source Java library for computational proteomics
Open Source Java ZUGFeRD library
Open source analytics and market risk library from OpenGamma
Make Opensource Easy - tools for synchronizing repositories
The Java open source content management system by Alkacon Software
Tools for detecting and avoiding linkage errors in GCP open source projects
Open Source Java enterprise application for storing, searching and retrieving data
BioJava is an open-source project dedicated to providing a Java library for processing biological data.
Apache Dubbo is a high-performance, java based, open source RPC framework.