TECL - totally encompassing configuration language
· A language parser specifically aimed at configuration files, trying to solve the issues found in XML, JSON, YAML, etc.
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 tecl-parent-1.5.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.