VSCodium
My main general-purpose editor for larger projects, broader navigation, and work that benefits from an integrated graphical environment, with the additional advantage of avoiding the default telemetry of the standard build.
Linux is my operating system of choice because it fits naturally with web development, scripting, automation, local servers, and the general command-line workflow I prefer. It keeps the system inspectable and makes it easy to combine smaller tools into repeatable tasks.
I also value that Linux tends to age well, works comfortably on modest hardware, and supports open formats and open tooling. That matters to me more than visual novelty, especially for teaching, research, and maintainable personal projects. I also keep a custom kernel build in use, which fits well with the more hands-on and adjustable style of system maintenance I prefer.
My everyday desktop setup is based on bspwm with sxhkd, polybar, dunst, and dmenu. That combination keeps the environment lightweight, keyboard-oriented, and predictable, which is exactly what I want from the system layer beneath the rest of the tools.
For file management, I use lf on the terminal side and Nemo when a graphical file manager is the more practical choice.