Oracle9i JDeveloper - J2EE and XML development environment with end-to-end support for developing, debugging, and deploying business applications and Web services. - http://www.oracle.com/technology/products/jdev/index.html
Ideo Technologies S.A - Offers SweetDEV Studio, a Web Integrated Development Environment (Web IDE) based on Eclipse for developers working on JSP pages and frameworks such Struts or SweetDEV. - http://www.ideotechnologies.com/
Sybase PowerJ - For Windows 95/NT. [Commercial] - http://www.sybase.com:80/products/archivedproducts/powerj
JIG - A Java integrated development environment that lets you write, manage and debug applets and applications written in Java. JIG is written entirely in Java. - http://www.scubed.cc/ga/
ElegantJ - A development tool and framework for Java Beans focused development. - http://www.elegantj.com/
Compuware OptimalJ - Offers IDE product description, download, support and product news. - http://www.compuware.com/products/optimalj/
Omnicore Software - Producers of CodeGuide, a graphical integrated development environment for Java. [Commercial] - http://www.omnicore.com/
eVisNet Spirit(TM) visualJava tool - Full consulting services for the creation of Java applications. Spirit(TM), the Java tool that allows non programmers to create Java Applications, Beans, and Applets. Spirit is fully visual, requiring no knowledge of the Java language. [Commercial] - http://www.evis.net/
AnyJ - The high-end full-featured Cross-Platform Java IDE & Source Code Engineering (SCE) solution for Linux, Windows NT and Solaris from NetComputing GmbH. [Commercial] - http://www.netcomputing.de/