This article discusses the challenges and solutions discovered for implementing the Memento protocol in a variety of browser environments. It describes the design and deployment of the client technologies which have been developed: a web application that functioned as a browser, an add-on for FireFox called MementoFox, a plugin for Internet Explorer and an Android-based client application. The design and technical solutions identified during the development will be of interest to those considering implementation of a Memento based platform, especially on the client side, however the interactions are also important for building conformant server-side systems.