Under this analysis, browsers like @Vivaldi are in a very precarious situation: on the one hand, #VivaldiBrowser is being developed under what is arguably a “web of documents” mindset, and in fact more in general as a “Swiss knife of the Internet”, similarly to classic #OperaBrowser (I've already written about this at length). On the other hand, its reliance on the #Google-controlled #Blink engine that is designed for the “web of apps” cripples it in its efforts:

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