The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.

JIRA provides cutting edge issue tracking and project management.

OAuth 2.0 SDK with OpenID Connection extensions for developing client and server applications.

Factories, Injection, and Testing library for UIMA

The api that is re-used across web and modules

Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools.

Apache Commons VFS is a Virtual File System library.

The Sakai kernel provides core functionality for the Sakai framework

Apache Solr (module: core)

cas-server-core-util-api

Magnolia Core