In the good old days of browser companies making browsers for the users (Opera up to 12.x) you were able to configure EVERYTHING per web address http://help.op

In the good old days of browser companies making browsers for the users (Opera up to 12.x) you were able to configure EVERYTHING per web address http://help.opera.com/Windows/12.10/en/sitepreferences.html http://help.opera.com/Windows/12.10/en/sitepreferences.html localstorage, separate widget localstorage, separate userjs storage, Web SQL - you could limit/disable/define everything with fine granularity(disabled, quota, popup if quota exceeded) globally and per domain. opera:config#PersistentStorage Can you imagine something as crazy as letting user decide which sites are allowed to run Javascript? use localstorage? leave permanent cookies? use plugins? or something as weird as defining custom useragent string per website? All possible in Old Opera, No other browser will let you do that now afaik. Today? Today you get Firefox forcing Pocket, Google serving Voice control binary blob, and all around people coming up with things that cant be fine tuned at the user level like webRTC. We are slowly moving to a point (wtf webassembly) to a point we will lose any control over whats flowing down the wire from the server and runs on our computers.