This talk presents Willow, a Web Interaction Library that provides all the components and tools to create an interactive AJAX-based web application, without leaving the comfort of your Smalltalk environment. After years of refinement and with a growing ecosystem of related projects, Willow is currently used by software development companies, personal commercial products and university research projects. We will review the most relevant features it offers, present a summary of the different web components and commands it reifies, and detail the open-source projects that make up this library.