Considers the urgency of development of the circuit design CAD. Are the benefits of using a web based user interface for the universalization of the used platforms (computing devices including the operating system). Describes the advantages of using distributed system to create a circuit design CAD system components and their functionality. Specifies the methods to increase the interactivity and speed of the user interface. Given the advantages of using a data exchange Protocol and the WebSocket application of object-oriented JavaScript interface. Describes the principles of organization and storage of user data.