This document summarizes various Volto add-ons created by EEA and Eau de Web for customizing the front-end of Plone sites. It describes add-ons for theming, widgets, layout/styling, data visualization, text editing, and other functionalities. Over 100 Volto add-ons are maintained in GitHub repositories and published to NPM. The add-ons are used to build websites like eea.europa.eu and provide features like maps, charts, footnotes, and metadata handling.