I’ve been using wefwef WebApps to browse the fediverse and am curious to understand how it works. I do not have knowledge deep knowledge about coding or programming.
If being accessed solely through the browser is your qualification for web app, then wefwef (a PWA or Progressive Web App) meets that too, as it can only be used by a browser. “Installing” it is essentially equivalent to adding a shortcut to your desktop.
Also, Teams, Discord, and any other software written using Electron would then be a web app as well since every one of their windows is a browser window.