The app catalogue on the website is a good reference to show what apps you have available but it would be great either in that or via a csv download which apps in the catalogue are freeware and which require a paid license.
That way when evaluating which apps we may want to publish to users we can quickly see which apps are free to use and filter the others away.
A lot of the time our users would not know some of these apps even exist so it would at least narrow the list down for us to evaluate that we may want to provide rather than having to go through and check on the vendors sites if they require a paid license or not.