General Actions:
XWiki Commons - Extension - Handler - JAR
HtmlCleaner is an HTML parser written in Java. It transforms dirty HTML to well-formed XML following the same rules that most web-browsers use.
Serializers and deserializers for storing objects on the disk or exporting them.
JFreeChart is a class library, written in Java, for generating charts. Utilising the Java2D APIs, it currently supports bar charts, pie charts, line charts, XY-plots and time series plots.
XWiki Commons - XML
XWiki component and service that manage workspaces.
Simple java library for transforming an Object to another Object.
XWiki Platform - Rendering - Macro - Context
The Jython Standalone installation is a Jython JAR also containing all Python standard libraries. The JAR can be recreated by following the 'Standalone mode' installation instructions: http://wiki.python.org/jython/InstallationInstructions.
Logback: the reliable, generic, fast and flexible logging library for Java.
XWiki Platform - Extension - Cluster
Apache Velocity is a general purpose template engine.
Apache Tika is a toolkit for detecting and extracting metadata and structured text content from various documents using existing parser libraries.
A repository connector implementation based on AsyncHttpClient.
XWiki Platform - Cache - Infinispan
Library for working with the Java 5 type system
XWiki Platform - WatchList - API
Async Http Client library purpose is to allow Java applications to easily execute HTTP requests and asynchronously process the HTTP responses.
A repository connector implementation based on Maven Wagon.