Vivaldi's tab tilling add-on in Firefox
Vivaldi (and Edge) have this absolutely wonderful capability that allows me to split one tab into two or four at the same time....
![](https://kbin.cafe/media/cache/resolve/entry_thumb/62/03/6203a374b9781623e809e7f6bd8ce7a01c93dcd87f8da3e5010f6a7583a1c795.png)
Vivaldi (and Edge) have this absolutely wonderful capability that allows me to split one tab into two or four at the same time....