alacritty VS Tabby

There are many terminal emulators, for throughput, predictable behavior with modern features, quake style, theming, tabs, and much more. Most of the features you need are supported by urxvt, and if it's not, there's sure to be another non-electron terminal emulator that has exactly what you need.

Alacritty — A cross-platform, GPU-accelerated terminal emulator https://github.com/jwilm/alacritty

I would be using Tabby Terminal.

tabby.sh - design, features

iTerm2 is a great terminal for macOS. I use it extensively every day. Despite that, I would gladly try out other terminals because it's fun and because I'm always open to finding something superior to even the great tools I use.

That said, there is exactly 1 feature that seems to only exist in iTerm2, and until another terminal emulator appears that has it, I'm staying put: tmux control mode.

https://github.com/Eugeny/tabby/issues/2715

I've found Tabby does a good job and is Cross-Platform to you can use on Windows too. It can run any installed shell, serial connections and ssh. You can create profiles. It needs some work to be fully functional in Wayland i.e. Autohide feature doesn't work. But that's a graphical issue. Though, if you're just after creating and organising SSH profiles not terminal emulation, Remmina already has you covered. SSH, RDP and VNC.