OSMT
· The Open Skills Management Tool (OSMT) makes it possible for employers, educators, military, and other stakeholders to create and share open skills libraries. OSMT advances skills-based education and hiring.
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 osmt-parent-2.5.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
