Modern #browsers have offered native side-by-side tab viewing for a while now.

 #Microsoft #Edge features built-in split screen within a single tab.
 #Vivaldi allows users to view more than two panels at the same time.
🅾️ #Opera offers vertical, horizontal, or grid layouts for up to four pages.
  #Google #Chrome as of February 2026 includes Split View in version 145+ for side-by-side viewing.

 #Firefox just introduced Split View.