In preparation for a Lepton Collider in the multi-TeV range which will possibly be required for precision physics beyond the standard model if and when identified, novel acceleration techniques are being developed with attractive performance. After a review of the technology options being considered for an affordable e+/-linear collider at the energy frontier, the presentation will focus on Muon-based facilities which offer a unique potential to enable capabilities at both the Intensity Frontier with Neutrino Factories and the Energy Frontier with Muon Colliders ranging from Higgs to multi-TeV energies. By comparison with other technologies, through objectives Figures of Merit, a Muon Collider, is demonstrated to be the most promising option in the multi-TeV energy range. Muon based facilities rely on novel technologies with challenging parameters and critical issues from which the status and future plans of the R&D to demonstrate their feasibility is presented.
