Library that attempts to take the pain out of generating SQL queries within Java programs. LGPL

SqlBuilder (OpenHMS) 2.0.3 wraps the SQL syntax within very lightweight and easy to use Java objects that follow the "builder" paradigm (similar to StringBuilder). This changes many common SQL syntactical, runtime errors into Java compile-time errors.

Framework to develop JavaEE/J2EE applications rapidly and easily. LGPL

OpenXava 3.0.2 allows you to define applications only with POJOs, JPA, and Java 5 annotations. It is feature rich and flexible. It generates JSR-168 portlet applications (Liferay, WebSphere Portal, Jetspeed, etc.).

Java Graphing framework. LGPL

JGraph 5.12.0.0 is a free, mature, and robust Java Graphing framework that fully complies with Swing design principles. It contains all the graph visualization and interaction functionality you might expect in a graph library, including multiple views, layering, zoom, drag and drop, undo, automatic expanding and collapsing, routing, and layouts. You can create stunning workflow editors, call graphs, CAD tools, network diagrams, database visualization tools, and more. It can also be deployed on the server-side with a large range of image exporting functionality. It is fully documented and commercially supported.

Tool for Java developers. Freeware

Refactorit 2.6
A developer can take source code of any size and complexity and rework it into well-designed code by means of over 30 automated refactorings. In addition, it provides a comprehensive set of smart query functions, a graphical dependency analyzer, and over 100 quality metrics, audits, and corrective actions, that make it possible to analyze and track large volumes of code. It may be used as a stand-alone tool or installed as an add-in to Eclipse, NetBeans, and JBuilder.

Web test tool that allows you to create, run, and debug test cases for Web applications. Freeware

Yawet 0.5 is a Java application for version 1.4 or higher. It features a Swing GUI, verification of HTML, PDF, and XML documents, parametrisation, libraries, HTML frame support, console mode, project files in XML format, integrated HTML tree parsing, and log and report generation. It is extendable with Java.

XML/Java Framework for rapidly and easily developing J2EE business applications. LGPL

OpenXava 2.1.5 is based on business components defined with XML. It is feature rich and flexible, since it has been used for years to create real business applications.

Object/relational persistence and query library. LGPL

BeanKeeper 2.3.0.3 (formerly Simple Persistence for Java) is a full featured, powerful object/relational persistence and query library. It has a unique philosophy of simpleness and ease of use: it does not require config files, annotations, code generation, code "enhancing", or any kind of tools to be used. It handles simple Java beans (or POJOs) and its query service returns lists. Despite its simpleness, under the hood the library takes care of all the necessary logic: transaction visibility, result list paging, keys and ids, table creation/modification, class relations, inheritance/polymorphism, case sensitiveness, and much more. It currently supports: Oracle, HSQLDB, MySQL, and PostgreSQL.

Integrated development environment for creating, compiling, and executing Java applications and applets. Freeware

Java Tools 0.29 is a lightweight integrated development environment for creating, compiling, and executing Java applications and applets. It includes point and click access to the Java files, commands, and documents. It also includes a built-in text editor and user interface for the Java debugger. It is intended for the new Java user who needs help getting started. It's also for the more experienced Java user who wants easy access to the Java commands and a text editor.