Spring Beans provides the configuration framework and basic functionality to instantiate, configure, and assemble java objects.

Spring Data makes it easy to use data access technologies, relational and non-relational databases, map-reduce frameworks, and cloud-based data services.

Spring Security

Spring Security

JMS support package, including helper classes to send/receive JMS messages

Spring Messaging provides abstractions such as Message, MessageChannel, MessageHandler, and others to serve as a foundation for messaging-based applications. It also includes a set of annotations for mapping messages to methods.

The Commons Configuration software library provides a generic configuration interface that enables an application to read configuration data from various sources and requires Java 8.

Spring Aspects integrates Spring with AspectJ.

Spring Data module for JPA repositories.

MongoDB support for Spring Data

Spring Web Flow builds on Spring MVC and allows implementing the 'flows' of a web application. A flow encapsulates a sequence of steps that guide a user through the execution of some business task.