Doko is a Chrome add-on designed to enhance navigation between deployment environments for web applications. It implements the Doko protocol, which introduces a meta tag-based standard that allows web applications to convey essential information about their current environment. This feature is particularly useful for developers and teams managing multiple deployment stages.

The Doko add-on presents this information through a clean and user-friendly widget, making it easier to visualize the current application environment. By utilizing Doko, users can improve their workflow efficiency and reduce confusion during the development and deployment process, ultimately leading to a more organized approach to web application management.