  Since August 2009, MAXI experiment on the ISS has been performing all-sky
X-ray monitoring. With MAXI, we detected flaring activities of some blazers,
including Mrk 421, Mrk 501, and 3C 273. Recently, new X-ray flaring activities
were detected from two blazers, MAXI J1930+093 = 2FGL J1931.1+0938 (Atel#5943)
and 2MAXI J0243-582 = BZB J0244-5819 (Atel#6012). The MAXI monitoring also
covers black hole binaries, including Cyg X-1 and Cyg X-3 which emit GeV
gamma-rays. Their gamma-ray emission was found to coincide with their X-ray
state transitions. We present light curves and outstanding events of these
sources.
