FIFA says 13 different goal-line technology systems are being considered to help match officials make more accurate decisions.
FIFA says all the project proposals were presented last week, and will be further discussed at an October 20 meeting of its rule-making panel, known as IFAB.
The panel is gathering in Newport, Wales, to help set the agenda for its annual meeting next March when the laws of football can be changed.
FIFA president Sepp Blatter reopened the debate on using technology to help match officials after a series of mistakes affected the World Cup in South Africa, and helped eliminate England and Mexico.
Blatter had previously resisted high-tech help for referees by insisting that human error was part of the game.