Nooku is a free Chrome app designed for developers looking to test their open-source web application framework directly on a demo server. This tool simplifies the development process by providing quick access to the framework's features, making it easier for users to experiment and iterate on their projects. The app is categorized under Browsers, specifically in the Add-ons & Tools subcategory, ensuring it integrates seamlessly into the Chrome browsing experience.

The Nooku app is particularly beneficial for those familiar with coding, as it offers direct access to the source code available on GitHub. This transparency allows developers to customize and enhance the application according to their specific needs. Overall, Nooku serves as a valuable resource for web developers, facilitating efficient testing and development within the Chrome environment.