Software

Electronic Piano:Electronic Piano emulates one of those electronic musical keyboards on your computer, using each keystroke of your PC keyboard to produce a different sound. Just like the original instrument, this software app supports a wide range of different sound styles, enabling you to emulate almost anything from a piano to a guitar, including trumpet, bass, organ, harmonica, violin, cello and a lot more.

RythmRascal:Rhythm Rascal is a software drum machine for your computer that can be programmed to play any style of music. It was designed specifically for metal, rock, and other traditionally "non-electronic" music genres.  It has also been used to create drum tracks for just about every type of music under the sun.

Virtual Dramming:Virtual Drumming has a Joey Jordison drum set where you can play and learn through percussion sheet music for beginners about nova sticks.

Scribbd: A digital documents library that allows users to publish, discover and discuss original writings and documents in various languages. 

HitXP: HITXP = Human Intelligence To-solve X-treme Problems.