Spring is also an open source framework, which was created by RodJohnson to solve the complexity of enterprise application development.
One of the main advantages of this framework is its layered architecture, which allows you to choose which component to use and provides an integrated framework for JavaEE application development.
The use of Spring is not limited to server-side development.
From the point of view of simplicity, testability and loose coupling, any Java application can benefit from Spring.