i3
i3 is a tiling window manager for X11 and Wayland, designed to manage application windows in a non-overlapping, grid-like layout to maximize screen space and efficiency. It is highly configurable through a plain-text configuration file and supports keyboard-driven navigation, making it popular among developers and power users who prefer minimalistic, keyboard-centric workflows. Unlike stacking window managers, i3 automatically arranges windows without manual resizing or overlapping.
Developers should learn i3 when working in Linux or Unix-like environments where efficient screen real estate management and keyboard shortcuts are prioritized, such as for coding, system administration, or multitasking with multiple terminals and editors. It is particularly useful for those who dislike mouse dependency and want a fast, distraction-free interface that can be customized to automate window layouts for specific workflows, like splitting screens for code and documentation.