Solving the Schrödinger equation for the many body problem is central in the development of quantum mechanics and for the study of atoms and molecules. In the past there have different approximations addressing this problem: From Hartree Fock Theory to Configuration Interaction. Quantum Monte Carlo uses a trial wave function that is used for modeling the integral of the energy through sampling across all the integral space. In this work, some results obtained from different Quantum Monte Carlo Methods (from references) are compared with those obtained with other methods. This worksheet uses the Maple Quantum Chemistry Toolbox