A short presentation of the X-ray free-electron lasers currently operating, commissioning, or in an advanced state of construction worldwide is given. The main features of each facility are summarized, emphasizing the electron energy, the wavelength range and the time structure. Special attention is given to the Pohang X-ray Free-Electron Laser, to the European XFEL in Hamburg, and to the SwissFEL at the PSI in Villigen, that are currently in an advanced state of commissioning, with an imminent start of experimental activities on some of their planned instruments.
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