Thinkter is an example of a full-stack Web application built with Kotlin. The backend runs on the JVM, and the browser front-end uses React. The example implements a very simple microblogging application. The backend of Thinkter is built using Ktor, a Web framework built by the Kotlin team. For data persistence, it uses H2, allowing you to run the example without the need to configure an external SQL server. The HTTP server implementation is provided by Jetty.