kitty

kitty is a modern, hackable, featureful, OpenGL based terminal emulator. It supports tiling multiple terminal windows side by side in different layouts without needing to use an extra program like tmux.

It supports all modern terminal features: Unicode, true-color, mouse protocol, focus tracking, bracketed paste, and so on. It allows you to view the scrollback buffer in a separate window using your favorite pager program such as less.