The Spring Boot application that we created in Chapter 4, Securing and Testing Your Backend, (GitHub: https://github.com/PacktPublishing/Hands-On-Full-Stack-Development-with-Spring-Boot-2.0-and-React/tree/master/Chapter%204).
The React app that we used in the previous chapter (GitHub: https://github.com/PacktPublishing/Hands-On-Full-Stack-Development-with-Spring-Boot-2.0-and-React/tree/master/Chapter%2011).