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This chapter describes the installation of add-on components, themes, containers, and other tools from the Vaadin Directory and the use of commercial add-ons offered by Vaadin.
In addition to the components, layouts, themes, and data sources built in into the core Vaadin library, many others are available as add-ons, either from the Vaadin Directory or from independent sources. Both commercial and free components exist under various licenses.
Installation of themes, data sources, and components built with server-side component composition is simple, just dropping a JAR package in a project and, usually, compiling the included widget set (the client-side implementation).