Gecode, (2) ECLiPSe (Apt and Wallace 2007),
SICStus Prolog, (3) JaCoP, (4) BProlog,5 Choco (Laburthe 2000), Mistral, (6) OR-tools, (7) gecoxicals, picat, (8) and Opturion CPX, (9) as well as CP solvers developed by the NICTA Optimization Research Group: g12-fd, g12-lazyfd (Feydy and Stuckey 2009), and Chuffed.