Mojolicious might be famous for its server side presence but that doesn't rule out excellence on the client side as well, as this book demonstrates.
This book about writing post modern client application that can interact with web sites build with Mojolicious or otherwise. As on the server side, so on the client side there's a sheer amount of choices and depth of functionality that Mojo supports. JSON and XML parsing, DOM handling with CSS selectors and asynchronous requests amongst others. One namespace to rule them all.