HaZe is an X window manager

X window manager

An X window manager is a window manager which runs on top of the X Window System, a windowing system mainly used on Unix-like systems.Unlike the Mac OS and Microsoft Windows platforms which have historically provided a vendor-controlled, fixed set of ways to control how windows and panes display...

 extensively based on the Takashi Hasegawa

Takashi Hasegawa

Takashi Hasegawa is an electrical engineer and programmer, who works at the Optoelectronic System Laboratory of Hitachi Cable, Ltd.Hasegawa graduated with a Ph.D. in electrical engineering from Nagoya University...

 creation known as MLVWM

Macintosh-Like Virtual Window Manager

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...

, the Apple Macintosh interface-mimicking window manager.

Created in 2001, HaZe is a virtual window manager distributed under the GNU General Public License

GNU General Public License

The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

 that claims to be "a real B&W window manager", and is aimed at minimalist users.

Both Haze and MLVWM are based on FVWM

FVWM

The F Virtual Window Manager is a virtual window manager for the X Window System. Originally a twm derivative, FVWM has evolved into a powerful and highly configurable environment for Unix-like systems.- History:...

, which was created by Robert J. Nation in 1993.