Site Search 360 is a premium website search option with a WordPress plugin for easy integration. It provides a speedy search option that boasts features like voice search, synonym recognition and more. The platform provides a Search Designer tool to easily style the search box and results to match any look & feel. Site Search 360 also provides analytics showing search terms and popular results. While the plugin is free, Site Search 360 is a paid service for anything beyond a certain number of pages or queries a month.