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Spring is an Application framework which has Inversion of Control container, Aspect-oriented programming framework, Data access, Transaction management, Model-view-controller for web, Remote access framework (RPC) and lot more. It is well integrated with Toplink, Hibernate, JDO, and iBATIS.
Grails is a web framework, for the JVM, built on top of Spring Boot. It leverages many features such as Spring-Powered dependency injection. It seamlessly and transparently integrates and interoperates with Java, the JVM, and existing Java EE containers.
MyFaces is a family of projects related to the JavaServer Faces (JSF) specification published as part of the Java Community Process. The "core" project is an implementation of that specification. Other MyFaces projects implement related specifications (eg the Portlet Bridge), or add features to any JSF implementation (not just the Myfaces Core).
SproutCore is a framework for building blazing-fast, desktop-like applications in the web browser using only native HTML5 features. With SproutCore, you can build rich, interactive applications in the web in less code than most simple web pages require today. SproutCore applications move business logic to the browser so they can respond to your users' taps and clicks immediately, avoiding an agonizing roundtrip across often intermittent network connections.
Griffon is desktop application development platform for the JVM. Inspired by Grails, Griffon leverages concepts like Convention over Configuration, modularity, and freedom of choice. The framework at its core is written 100% in Java allowing developers to write their own applications with only Java. Other programming languages such as Groovy and Kotlin may be used too, in which case additional capabilities such as builders and extension methods become available.
In order to better understand why this architecture is good for medium to large applications, I encourage you to watch a couple of Uncle Bob Martin's talks on this subject -- easily found on the Internet. Good software architecture is about decoupling. The main message of the Clean Architecture seems to be, decouple your business logic from any dependencies, so your large project can survive these (swapping them with less effort).