We present a summary of the state-of-the-art comparison relevant to possible studies of the X(125) Higgs boson candidate.
The machines considered are the LHC and its upgrades, Linear and circular e+e- colliders such as ILC/CLIC or LEP3/TLEP, gamma-gamma colliders and muon colliders.
The conclusions of the recent ICFA beam dynamics HF2012 workshop in Fermilab will also be shown.