Gas to liquid technology (GTL) is a refinery process that converts syn-gas (a mixture of carbon monoxide and hydrogen) into long chain hydrocarbons like gasoline and diesel. Fischer-Tropsch process is a key component of gas to liquid technology. As an commercial example, the world largest GTL plant was commissioned in Qatar (known as World gas capital) in consultation with Pearl GTL and Qatar petroleum. Gas to liquid technology is an emerging technology to unlock the abundant natural gas resources. GTL holds as the future of energy and provides a new platform to the world energy industries.