Opera used to be a fantastic web browser, with a custom high-performance Presto rendering engine and features like tabbed windows that didn't show up in competing browsers until years later. However, the modern Opera browser is a shadow of its former self, reliant on chasing trends and meme advertising to
I loved some of the functionality Vivaldi adds (split tabs, tab groups, etc) but I couldn’t take the instability that came with it. That thing crashed more times in the 6 months I used it than Firefox or Chrome ever have for me total I swear to god.
I use Vivaldi on macOS and Android.
I’ve never had stability issues.
Somewhat ditto, though for me it was less actual crashes and more generically bad performance while the rest of the system chugged along fine.