Responder pom project
· Includes the Responder and the standard plugins. The Config File Plugin is included directly in the main ResponderDaemon package.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window Responder-0.4.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.