Alacritty

xterm is a terminal emulator for the X Window System, first released to emulate DEC VT102 and Tektronix 4014 hardware and provide a windowed interface for applications that cannot access X directly. Each xterm window runs as a separate process, locally or remotely, while sharing keyboard and mouse input with only the focused window receiving events. It implements ANSI/ISO color support via the “new” color model for background erase and recognizes most VT220 control sequences, along with select features from VT320, VT420, and VT520 devices. Over its history, xterm’s terminal description evolved from VT102 (pre-1996) to VT220 (1996–2012) and, since 2012, to VT420, ensuring compatibility with modern applications. Xterm remains actively maintained and extensible through companion tools like luit for encoding support and the X Toolkit for resource configuration, making it a complete, standards-compliant emulator for Unix-based environments.

Zellij is a workspace aimed at developers, ops-oriented people, and terminal enthusiasts, designed around the philosophy that one must not sacrifice simplicity for power, delivering a great out-of-the-box experience together with advanced features. Geared toward both beginners and power users, it offers deep customizability and personal automation through layouts, true multiplayer collaboration, unique UX elements such as floating and stacked panes, and an innovative resizing algorithm that automatically places new panes in the optimal location. A plugin system enables creation of custom pane types in any language compiling to WebAssembly, while a comprehensive CLI introduces Command Panes for running and rerunning commands in dedicated panes and provides actions like run, edit, and rename-pane. Zellij’s single-process core ensures responsive performance, and its batteries-included approach gives users a terminal workspace with everything needed for modern development workflows.