The Frogs are simple LilyPond users who have chosen to get involved in their favorite software's development. Fixing bugs, implementing new features, documenting the source code: there's a lot to be done, but most importantly: this is a chance for everyone to learn more about LilyPond, about Free Software, about programming... and to have fun. If you're curious about any of it, then the word is: Join the Frogs!