As its name suggest, wattOS 10 Microwatt Edition is a slimmed down version of the Ubuntu-based GNU/Linux distribution designed to be used in households where people want to be eco-friendly and consume less power when working on their personal computers. It can be installed in old PCs from 10 years ago with 128 MB of RAM. The best part of the wattOS 10 Microwatt Edition is that it can be bent to your likings. You can turn it into anything you want, a smart server, a powerful workstation, you name it. It dosen’t include anything by default, not even a web browser or music player, so you’ll have to install them.