Dvorak Layout is the Computer Keyboard layout Designed by Dr. August Dvorak and his brother-in-law, Dr. William Dealey and patented in 1936. It has different key placements from the most widely used QWERTY keyboard layout and looks like this:
Dvorak Simplified Keyboard. Image From Wikipedia.
I first heard about Dvorak in some random IRC discussion around 2009-2010. After researching about it online I decided to learn it.