The joy of X - master the Linux GUI If you're a Linux user you have no doubt heard of GNOME and KDE. These popular desktop environments are really the pinnacle of a deep iceberg of technology with the X-Windows graphical interface underpinning it all. Here are a couple of ways to tame X, kicking off a journey of unlimited ability to change the Linux look-and-feel. (Read more) LilyPond LilyPond is an "automated engraving system." It will format music notation beautifully without requiring typographical expertise of its users. It tries to mimic traditional plate engraving in the general impression, layout algorithms, and the font design.