AWS Sandbox
This page is hosted on AWS in an S3 bucket and made accessible through Cloud Front. Its purpose is to illustrate my understanding of AWS.
Both the Cargo Tracker and the Spring Pet Clinic are open source sample applications.
Github for Cargo Tracker: https://github.com/javaee/cargotracker
Github for Spring Pet Clinic: https://github.com/spring-projects/spring-petclinic
Originally, the Cargo Trackers purpose was to illustrate domain driven design and then later Oracle borrowed it to illustrate EJB. The license found on the github shows the owner to be Oracle, but I would imagine it transferred to the Eclipse Foundation with the rest of the Java Enterprise Edition.
Naturally, the Spring Pet Clinics purpose is to illustrate programming with Spring. The github does not explicitly say who the owner is, but it is well known that Broadcom Inc owns the Spring Framework.