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

Spring Context provides access to configured objects like a registry (a context). It inherits its features from Spring Beans and adds support for internationalization, event propagation, resource loading, and the transparent creation of contexts.

Spring JDBC provides an abstraction layer that simplifies code to use JDBC and the parsing of database-vendor specific error codes.

Spring AOP provides an Alliance-compliant aspect-oriented programming implementation allowing you to define method interceptors and pointcuts to cleanly decouple code that implements functionality that should be separated.

Spring Framework: DAO

Spring Framework: Hibernate3

xSocket

Kolja Util

Spring OJB

Kolja Log Viewer

Spring Framework: JDO