Alacritty vs Tabby

Alacritty is a free, cross-platform terminal emulator for Linux, macOS, Windows, and BSD. It uses OpenGL and is designed for high performance and extensive configuration, for people who spend substantial time in a terminal. Vi mode supports viewport and scrollback navigation, text selection, and copying with keyboard bindings; users can also search forward or backward through scrollback. Configurable regex hints can recognize visible text or links and pass them to an external application or trigger a built-in action. One instance can run multiple terminal windows, including through the alacritty msg create-window command. Alacritty is designed to integrate with other applications rather than recreate their functions, and URL-opening applications can be configured. Settings use a TOML file that the software does not create automatically. The project describes Alacritty as beta, with missing features and bugs still to address. It has no tabs, split panes, or graphical configuration editor, and requires OpenGL ES 2.0. Windows use requires ConPTY support on Windows 10 version 1809 or higher.

Tabby is a free, open-source terminal app for Windows, macOS, and Linux. It connects to local shells, serial devices, SSH servers, and Telnet hosts, and supports shell environments including PowerShell, WSL, Git-Bash, Cygwin, and CMD. Its SSH2 client has a connection manager, while the serial terminal offers connection profiles and input modes. SSH sessions support SFTP and Zmodem file transfers, X11 and port forwarding, jump hosts, and agent forwarding. Tabby can restore open tabs and split panes after you leave the app, and nested panes support simultaneous input. SSH secrets and configuration can be stored in an encrypted container; an optional password manager uses a master passphrase. Customization includes CSS themes, color schemes, shortcuts, and plugins. Other listed capabilities include GPU acceleration, session sync, scripting, portable mode, Explorer integration, and WinSCP integration. The app is described as forever-free FOSS. The page provides download and GitHub links but states no dedicated support terms.