A Web user interface session is initialized in such a way as to allow certain contextual environmental information associated with a user, including session properties such as user name, user role, and locale, to be shared between all applications invoked during the web user interface session. Application programming interfaces (APIs) are disclosed that provide access to the environmental information for both common gateway interface (CGI) programs as well as Java applets. The sharing of the environmental information between session applications allows a consistent user interface to be presented to the user during the session.