A method for communication between a first web application associated with a first browsing domain and a second web application associated with a second browsing domain. The browser-implemented applications record data from a browser software module and prohibit access to data recorded for selective browsing domains. The browser concurrently displays at least two sub-pages of an initial web page, a first sub-page being used for displaying a user interface for the first web application, a second sub-page being used for displaying a user interface for the second web application being executed independently of the first web application. A first software module of the first web application stores data in a database which is read by a second software module of the second web application, the first and second software modules being associated with a third browsing domain.