cattaSearch is web/cloud-based: The user needs a browser. The rest is on the backend server.
All the user needs is a web browser and a URL - a web address - for cattaSearch. The user interface is browser-based and no other installation is required in order to run cattaSearch.
The idea is to support all modern web browsers by using standard HTML, including cascading style sheets (CSS) and JavaScript, to display the pages in cattaSearch.