An open review website is a platform used to rate products, services, businesses, and other items. A use case diagram can be used for this type of website in order to identify the various actors involved with it, such as the customer, administrator, site manager, and so forth. Additionally, it can also define how these various actors interact with one another and with the website itself in order to create a successful review system. This would include listing out the step-by-step process of how customers are able to provide reviews, as well as how administrators can view and moderate their reviews. Download this template from EdrawMax and start customizing it as per requirements. With EdrawMax's built-in customization features, you can modify the content of this design as per your norms.