Jodd! Lightweight, Java, zero dependencies, use what you like
Open Utilities and/or Examples for GeneXus
Java ORM
Spring, SpringMVC, MyBatis, Spring Boot cases
jsoniter (json-iterator) is fast and flexible JSON parser
An extremely minimal parser for XLSX (Excel) files
Generating documents and reports, offline enabled and reliable.
Full JAVA JDBC Interface to MS Access using Jackcess
A java configuration file and command line parser
Java Command Line Argument Parser
Very Compact Java Reader / Writer ( 12kb)
a simple cron scheduler for java
Oracle File system Extension
Java all purpose Library
Command line argument parser library for Java
Java XML parser / binder
Allows querying Content Management Systems that use the CMIS.
LGPL GML parser
Simple Workflow is a free workflow engine written in Java.
Central Software Configuration by Java API and SOAP Service
Remote JDBC access through HTTP