BRIC is a powerful tool for batch image processing.
vocabulary trainer
Java based XSLT Processor extension for syntax highlighting
Feature rich insurance quote & buy system for underwriters and brokers
MITIE: library and tools for information extraction
JasperReports exporter to Docx document
MIPS processor in Java
Mature LDAP, LDIF and DSML client with i18n support.
An open source search engine with RESTFul API and crawlers
A set of tools and libraries to help with writing eBooks
Natural Language Processing (NLP) for the Masses
High performance JVM JSON library
Another take on Android AIDL tool
A Java Class Library for Text Processing
Classic text-based treasure hunt
DocBook Editing and Processing for Eclipse
Open Source Security tool to audit hashed passwords.
java8 based yb (creator's name) medical mini dictionary with text file
Lucene based concordancer
.NET, PowerShell, SQL, Java, Perl, and Javascript developer libraries