kitty is a fast, feature-rich, GPU based terminal emulator. kitty is available for Linux and macOS. kitty is designed for power keyboard users. To that end all its controls work with the keyboard (although it fully supports mouse interactions as well). Its configuration is a simple, human editable, single file for easy reproducibility. The code in kitty is designed to be simple, modular and hackable. It is written in a mix of C (for performance sensitive parts), Python (for easy extensibility and flexibility of the UI) and Go (for the command line kittens). It does not depend on any large and complex UI toolkit, using only OpenGL for rendering everything.