  Open clusters are the only example of single-age, single initial chemical
composition populations in the Galaxy, and they play an important role in the
study of the formation and evolution of the Galactic disk. In addition, they
have been traditionally employed to test theoretical stellar evolution models.
A brief review of constraints/tests of white dwarf models/progenitors, and
rotating star models based on Galactic open clusters' observations is
presented, introducing also recent contributions of asteroseismic analyses.
