I prefer the old Opera (12.16) to the new Chromium-based Opera. It remains my favourite on Linux & Windows. Android's "Boat Browser" comes closest to Opera 12.x - if you install the poorly performing ad-blocker and file-saver.
All internet browsers on all platforms need add-ons. Mine are:
translation - [translat]
page scroll - [scroll]
pdf (display, save) - [pdf]
youtube (save, pause, preview) - [youtube]l
restore text - only in Opera.
wikipedia (clean) - [wikipedia]
English is my only language, which I know very well, so I don't need dictionary, etc. I don't play games, etc ... on my computers, but others that I administer do need games, dictionaries, etc.
The 5th option above is needed in the old (Opera 12.x) because it crashes so much. There are strong reasons why many web-sites try to be compatible with old Microsoft Internet Explorer, so crash HTML5-optimized browsers like Opera 12.x AFAIK., etc
All the first feve options can be found in Opera 12.x, with the search term: "page".
On all browsers, whatever platform, the search term is [...] in the list above.
Only Opera 12.x has unusual, unique qualities not in any other browser on operating system:
a) it remembers the file-saved-format used, unless I change it.
b) it remembers the save-folder I'm using, regardless of how I'm saving the file. In Youtube, I often save a html, mht, mp3 and mp4 file from the one web address. Other browsers fail this easy task.
Firefox is better than it used to be, but only Opera and Microsoft's Internet Explorer allow ulra-fast saving of the MHT format, without add-ons. Only rational people need MHT format. Children don't consider the web to have anything besides instant eye-candy.
Opera 12.x is retaining its popularity in the Communist anti-fun nations. Since the childish third-worlders are the expanding internet world, childish browsers, lacking power, flexibility, etc ...are now being demanded by these noobs. So games, eye-candy, etc are being demanded by the app-creators. This means an easier, coder-friendly foundation to the browser. Hence the popularity of Google's open-source Chromium engine. This is the engine of the new browsers, AFAIK.
My opinions, conclusions might be wrong. What do you think?
Chief Information Officer Retired, 1984. Australian Capital Territory