Spring Test supports the unit testing and integration testing of Spring components with JUnit or TestNG. It provides consistent loading and caching of Spring ApplicationContexts and provides mock objects that you can use to test your code in isolation.

Starter for testing Spring Boot applications with libraries including JUnit Jupiter, Hamcrest and Mockito

Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.

Spring Security

The Apache Log4j support for web servlet containers

Camel Spring

Factories, Injection, and Testing library for UIMA

Provides implementations of the Person Directory API that have the capability of aggregating attributes from multiple data sources into a single view.

Library to support implementing representations for hyper-text driven REST web services.

Struts 2 Core

Spring extensions to ease in creating no-transform Atlassian plugins