Borexino is an excellent and well-understood detector for low energy, sub-MeV neutrinos (ν) and anti-neutrinos (), as proven by its recently published results. The European Community has recently approved a project for the construction of a ν or an source which will allow one to confirm or unambiguously reject the long standing neutrino anomalies suggested by the Liquid Scintillator Neutrino Detector (LSND), solar-ν gallium-based experiments and by reactor experiments. This note outlines the Short-distance Oscillations with Borexino (SOX) source project and discusses the sensitivities of its three proposed phases, as well as recent results from the solar-ν and geo- programs.