OpenRGB
Open source RGB lighting control
...It talks directly to supported devices and exposes a unified interface for setting colors, animations, and per-LED layouts across brands. The app supports running as a standalone GUI, a headless server, or a networked client so multiple machines can synchronize lighting. Profiles make it easy to save and switch complex scenes, and a graphical LED map helps craft precise patterns. Power users can automate everything via a command-line tool and an SDK that third-party apps can target. The project’s goal is straightforward: one tool to orchestrate all your lighting without the bloat, drivers, or background processes that often come with vendor software.