Alma: Object-oriented modelling, source code analysis and code migration between languages. [Open Source, GPL]
Bean Scripting Framework: IBM's architecture for incorporating scripting into Java applications, applets and servlets. [Open Source, IBM Public License]
BEanACTION: Recursive JavaBeans editor for constructing component-based software. [Open Source, GPL]
Codemesh, Inc.: Information on JunC++ion for integrating Java classes with C++, JMS Courier which lets you integrate C++ into any JMS vendor environment, and JuggerNET, which integrates Java and .NET by generating .NET proxy classes for Java classes. For Windows, Linux, and Solaris. [Commercial]
Editor Hub - Java: List of editors with Java support with reviews. Sorted by platforms and licenses.
EPP, an Extensible Pre-Processor kit: A powerful framework which supports implementation preprocessors, source-code analyzers, source-code translators for Java. [Freeware]
Grace: Generator for graph editors in Java, written in Java. (Here graph means a network of nodes, not something like a bar graph!) [Open Source, GPL/LGPL]
Imitate: A revolutionary way to create Java Applets and applications without programming Knowledge. [Shareware]
Jarhoo: An online search engine providing Package and Jar File location information for Java classes. Useful when getting ClassNotFoundExceptions or when importing classes into Java code.
JavaToolbox: Directory of the existing development tools, libraries and add-ins for Java/J2EE. Freeware, open source, as well as commercial products, organized in multiple categories.
jCVS: Java based CVS Client, with graphical user interface. [Open Source, GPL]
JDiff: Javadoc doclet which generates HTML report of differences between two APIs. [Free]
Jenv: A programming tool for those who used to make their code by hand. It consists of a simple editor with integrated compilation and running facilities. [Open source]
JGRASP: Graphical Representations of Algorithms, Structures and Processes: Illustrates program control flow graphically in the blank indentation space of source code. [Freeware]
jMetra: A tool for collecting code metrics for Java/J2EE projects into JavaDoc-styled HTML to analyze project metrics over time. [Freeware, req. registration]
Kopi Project: Tool and framework for creating database applications using Java, JDBC, and JFC/Swing. [GPL]
LogSequencer: A tool that reads your log files and generates Sequence Diagrams based on the logged information. Use it for documentation and debugging.
Netscape Directory SDK for Java: Source Code Release: Enables you to write applications which access, manage, and update the information stored in an LDAP directory. C and Perl versions also available. [Open Source]
ObjectLedge: A platform for building applications in Java 2 Standard and Enterprise Edition environments. It provides basic building blocks of the applications, a few extensions to the Pico framework, customized containers for easy deployment of applications in command line, daemon, and J2EE servlet environments. [Open source, BSD license]
oneClickJava: An easy to use free Java Development Kit configuration tool for beginner programmers. Written in Perl. [Open source, BSD-like]
Programmerworld.NET - Java Tools: Categorized list of Java development tools.
Reva Soft: Provides a "Ultra Light Client for Java," a Model-View-Controller architected lightweight client for server-based computing. Also provides overviews of company, services, and product support.
Scort: Allows web browsers to access terminal-based information systems without modifying existing applications.
SourceCafe: An Java code generator that automatically generates up to 80% of web application code. It simplifies database-driven web application development by generating a working prototype in a matter of minutes.
Versata, Inc.: Business-rules development platform for J2EE application creation and management.
Zaval Java Resource Editor: A visual editor for resource files. The files being produced by this tool is fully compatible with ResourceBundle expectations. Has been tested on Win/Unix/Linux/Mac platforms.