Software development involves a lot of thinking and a bit of typing. Still, moving your hand between your keyboard and your mouse hundreds of time a day involves a context switch which costs valuable cognitive energy. By trying to use mostly the keyboard in my workflow, I discovered how efficient and less tiring it is. That's why I wrote this book: to share this discovery. The book will show you, step by step, how to build a customizable Mouseless Development Environment based on Arch Linux, i3, Zsh, Neovim, and tmux. What will you get from this experience? A scalable development environment where you mainly use your keyboard. It's more fun, and more efficient too! Precise explanations how to configure everything, depending on your needs. You'll be in control, deciding what's more efficient for you. Knowledge about Linux and the terminal. We'll also see how to use timeless, customizable, and powerful tools. How to build a personalized installer with bash scripts, to summon all your tools and their configurations easily on any computer.