tmux is a terminal multiplexer. It lets you switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal. tmux

kitty
The fast, feature-rich, GPU based terminal emulator

Fast:

• Offloads rendering to the GPU for lower system load
• Uses threaded rendering for absolutely minimal latency
• Performance tradeoffs can be tuned

Capable:

• Graphics, with images and animations
• Ligatures and emoji, with per glyph font substitution

Hyperlinks, with configurable actions