  The Second Catalog of Blazars and other Active Galactic Nuclei detected by
the Fermi/LAT (2LAC) includes about 1100 sources, 886 of which comprise the
Clean Sample. The general properties of the different populations of sources
classified according to the strength of their emission lines (FSRQs, BL Lacs)
or the estimated position of the synchrotron peak are reviewed.
