In the last week we made a new Xojo plugin for a client. The plugin allows the integration with the SetApp service. As you may know SetApp allows you to subscribe for $9.99 to a pool of various Mac apps. The money is split each month to the developers based on what percentage of users have the app installed and in use.
When you offer a Mac application though SetApp, you receive your own custom library to link into your app (or a plugin). The library offers functions to report usage, ask user for email and present login or release notes. As the library is different for each vendor, we just build a new plugin for each of them.
If you like to try SetApp as Xojo developer, please visit their developer website.