Hi, William
No problem to use this plugin as part of the web application – it should be a WordPress installation with WPFTS plugin.
For standalone application there are two possible scenarios to follow:
1. You install the Apache server locally and install a local website based on WordPress with the WPFTS plugin. Then you can integrate the browser with this website into the native PC application using Electron (for example). In this case, however, you will need to install lots of things manually or semi-manually, like the Apache server, MySQL database etc. This case does not fit to you if you want to pack this PC app to the exe file and allow other users to install it to their computers.
2. You can implement your application using Nodejs+Electron to pack everything to the native exe application without the need to install Apache, MySQL etc. WordPress is not required here, also WPFTS will not work in this scenario. But you can make an installable exe file that any user can install in two clicks.
If you don’t satisfied with my answer, please provide more information about your upcoming project.