Follow Up Boss is a real estate lead tracking and gathering interface, compatible with common realtor/home-buying portals such as Zillow, Trulia, Realtor.com, IDX websites, and many more. The tool uses open data sources to extract information on potential leads, organizing content in an easy to manage environment. The Follow Up Boss API enables further customization of notifications and accessing data from profiles. For GET list queries, ISO 8601 standard date formatting is used. Developers can contact Follow Up Boss directly to acquire a developer account.