Basically most web apps. They are a clunky, laggy imitation of native apps. For a couple of historical reasons we are all using them, but still there is an enormous abyss between web apps and real native apps.
Not sure how the harmless and cute "Gizmo" web Netscape Navigator becomes the Gremlin monsters of today's web applications.
Perhaps the innocent desire of the developers to make their applications usable in different platforms but because of the laziness or budget constraints make them feed the cute Gremlins after midnight.
Hopefully the likes of cross platform native applications, e.g. Flutter will flourish in the near future and vanish the Gremlin monsters forever.
