Data from another source (defined by an url) can be displayed in
E. g. data from wikipedia or any other webstite.
Also data from a secured website can be added, e. g. proteted by htaccess - of course only, if you have the login data.
Data can be retrieved by php's standard
Data can be displayed as html or as xml (within textarea).
Read more https://extensions.joomla.org/browse/new/extension/authoring-a-content/content-construction/mod-qlcurl