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]
   http://olebon.i8.com/

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.
   http://www.sourcecafe.com/

Codemesh, Inc.  
   Information on JunC++ion for integrating Java classes with C++ and JMS Courier which lets you integrate C++ into any JMS vendor environment. For Windows, Linux, and Solaris. [Commercial]
   http://www.codemesh.com/

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]
   http://www.doclsf.de/grace/

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]
   http://www.mozilla.org/directory/javasdk.html

jCVS  
   Java based CVS Client, with graphical user interface. [Open Source, GPL]
   http://www.trustice.com/java/jcvs/index.shtml

EPP, an Extensible Pre-Processor kit  
   A powerful framework which supports implementation preprocessors, source-code analyzers, source-code translators for Java. [Freeware]
   http://staff.aist.go.jp/y-ichisugi/epp/

JDiff  
   Javadoc doclet which generates HTML report of differences between two APIs. [Free]
   http://javadiff.sourceforge.net/

Kopi Project  
   Tool and framework for creating database applications using Java, JDBC, and JFC/Swing. [GPL]
   http://www.dms.at/kopi/

JGRASP: Graphical Representations of Algorithms, Structures and Processes  
   Illustrates program control flow graphically in the blank indentation space of source code. [Freeware]
   http://www.eng.auburn.edu/department/cse/research/grasp/

oneClickJava  
   An easy to use free Java Development Kit configuration tool for beginner programmers. Written in Perl. [Open source, BSD-like]
   http://oneclickjava.sourceforge.net/

Scort  
   Allows web browsers to access terminal-based information systems without modifying existing applications.
   http://www.scort.com/

jMetra  
   A tool for collecting code metrics for Java/J2EE projects into JavaDoc-styled HTML to analyze project metrics over time. [Freeware, req. registration]
   http://www.hypercisioninc.com/jmetra/jmetradoc.html

Scioworks Camino  
   Visual tool for Apache Struts for rapidly assembling Java and J2EE web applications. [Shareware, 15 days]
   http://www.scioworks.com/scioworks_camino.html

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.
   http://www.revasoft.com/

Bean Scripting Framework  
   IBM's architecture for incorporating scripting into Java applications, applets and servlets. [Open Source, IBM Public License]
   http://www-124.ibm.com/developerworks/projects/bsf

LogSequencer  
   A tool that reads your log files and generates Sequence Diagrams based on the logged information. Use it for documentation and debugging.
   http://www.logsequencer.com/

Imitate  
   A revolutionary way to create Java Applets and applications without programming Knowledge. [Shareware]
   http://www.imitation.uk.com/

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.
   http://www.zaval.org/products/jrc-editor/

BEanACTION  
   Recursive JavaBeans editor for constructing component-based software. [Open Source, GPL]
   http://beanaction.sourceforge.net/

Javatoolsoft  
   JawaAPIHelper - Java API view and search tool; JawaBeginner - Java IDE tool; JawaHelpAuthor - Java help authoring tool; JavaJar - compress and decompress .jar files. [Freeware and shareware versions]
   http://www.javatoolsoft.com/

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.
   http://www.jarhoo.com

Programmerworld.NET - Java Tools  
   Categorized list of Java developement tools.
   http://programmerworld.net/resources/java.htm

Alma  
   Object-oriented modelling, source code analysis and code migration between languages. [Open Source, GPL]
   http://www.desnoix.com/guillaume/alma/

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.
   http://javatoolbox.com/