Script writers can write Scheme automation to navigate to and validate results in a third-party web application.
When defining the application to be tested in scripts, you should define the UI tests player with web_app instead.
(define sim (ui-test-player "web_app" browser))
Follow that to a change in the login function to use the URI instead of the login credentials.
(sim'login "https://www.nexj.com/")
Once that is done, you may automate as normal with provided functions. For more information, see Functions for testing automation.
Not all functions work with third-party web applications. Functions dependent on view paths will not work.