MrChecker
· MrChecker Test Framework is an automated testing framework for functional testing of web applications,
native mobile apps, webservices and database.
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 mrchecker-test-framework-2023.04.04.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.