TQL was designed by Giorgio Ghelli and Luca Cardelli and implemented in 2001
In particular Giovanni Conforti and Orlando Ferrara completed a first
prototypal implementation started by Francesco Pantaleo.
Antonio Albano, Dario Colazzo, Paolo Manghi, and Carlo Sartiani also initially contributed to the TQL project.
TQL has been extended and mantained by bachelor and master students with the supervision of Giorgio Ghelli and Giovanni Conforti.