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A summary review is presented of the experiments, motors, generators, devices, and demonstrations that have been reported in the past several years to produce near-unity or over-unity operation. The concepts of free-energy, zero-point energy, and over-unity devices are not new, and many examples of such devices have been built within the last 100 years. Several researchers are reviewed and a few are selected for immediate interest and support. Whether new forms of potential energy can be demonstrated and successfully utilized within the near future for the ultimate benefit of the human race remains to be seen.