  High energy particle colliders have been in the forefront of particle physics
for more than three decades. At present the near term US, European and
international strategies of the particle physics community are centered on full
exploitation of the physics potential of the Large Hadron Collider (LHC)
through its high-luminosity upgrade (HL-LHC). A number of next generation
collider facilities have been proposed and are currently under consideration
for the medium- and far-future of the accelerator-based high energy physics. In
this paper we offer a uniform approach to evaluation of various accelerators
based on the feasibility of their energy reach, performance reach and cost
range. We briefly review such post-LHC options as linear e+e- colliders in
Japan (ILC) or at CERN (CLIC), muon collider, and circular lepton or hadron
colliders in China (CepC/SppC) and Europe (FCC). We conclude with a look into
ultimate energy reach accelerators based on plasmas and crystals, and some
perspectives for the far future of accelerator-based particle physics.
