Quartz is a job scheduling library that can be embedded in java applications with support for transactions, persistence, clustering and plugins.

Spring Boot auto-configuration attempts to automatically configure your Spring application based on the jar dependencies that you have added.

Support classes for integrating common third-party libraries into a Spring application context

A JDBC datasource implementation.

Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

API elements for JIRA.

Confluence Core

Drools :: Compiler

The Drools and jBPM public API which is backwards compatible between releases.

cas-server-core-util-api

Apache Tika Parser Modules