Opera in the Presto days was a pioneer. Anybody that enjoys a #PWA (#ProgressiveWebApp) today should be aware of the efforts made by Opera to standardize their Widgets feature, even if the standard they promoted was ultimately obsoleted by the current one, that relies on modern client features that were not available at the time.
The Opera-designed “demonstrative” Unite Applications were media, photo and file sharing applications. Does that make you think of anything?