One embodiment of a method of integrating software applications includes customizing properties of an InfoVista application to accept a format of login strings provided by a SiteMinder application; modifying authentication information in properties of the InfoVista application to match authentication information that is to be sent from the SiteMinder application; and customizing the SiteMinder application to pass authentication information needed by the InfoVista application for login of a user into the InfoVista application using a single sign-on interface provided by the SiteMinder application. Other methods and systems are also provided.