MLVWM or Macintosh-Like Virtual Window Manager, is an FVWM descendant created by Takashi Hasegawa in 1997 while studying at Nagoya University and was written entirely in the C programming language. As its name implies, it attempts to emulate the pre-Mac OS X Macintosh look and feel in its layout and window design. Although no longer under active development, MLVWM has spawned a derivative known as HaZe, a Black-and-White (or Monochrome) window manager. MLVWM is now distributed under the GNU General Public License.