# Glances {#module-serives-glances} Glances an Eye on your system. A top/htop alternative for GNU/Linux, BSD, Mac OS and Windows operating systems. Visit [the Glances project page](https://github.com/nicolargo/glances) to learn more about it. # Quickstart {#module-serives-glances-quickstart} Use the following configuration to start a public instance of Glances locally: ```nix { services.glances = { enable = true; openFirewall = true; }; }; ```