Designed to analyze and reveal Java source code. Browse across all the relationships defined by the Java language. Many static analysis scripts and other options that obfuscate, format or convert code into html. [Commercial]

Get constructor, field, method information with free search for methods and option to view javadocs at method with your preferred browser. Configured by XML document. [Open Source, LGPL]

Plug-in for Eclipse enables explore Java code visually allowing see its structure and the links (calls, accesses, etc) between its different pieces. [Freeware]

A source code visualization and comprehension tool for Java and C++ developers. It reverse engineers a visual representation of the composition and dependencies of the application. [Commercial]

A Java class browser and project manager for Emacs. [Open source, GPL]

Class and package browser for quickly finding a class, its source, its methods, fields, constructors... and to be able to explore packages. Completion, class homonyms and disassembly may be enabled. [Open Source, LGPL]

A tool which converts a bunch of Java Source Code into a colourized and browsable HTML representation. [Freeware]

a combination of Java quick reference, class hierarchy browser, documentation generator and browser for Win32 platform [Commercial].

Attempts to eliminate the need to use "Find In Files". Allows developers to reach every corner of the source code. [Freeware]

Reverse engineering, documentation, code exploration and metrics tool for Java source code. [Commercial]