CrunchBang Linux (abbreviated #!) was a Linux distribution derived from Debian by Philip Newborough (who is more commonly known by his username, corenominal). CrunchBang was designed to use comparatively few system resources. Instead of a desktop environment it used a customized implementation of the Openbox window manager. Many of its preinstalled applications used the GTK+ widget toolkit.

CrunchBang had its own software repository but drew the vast majority of packages from Debian's repositories.
Philip Newborough announced on 6 February 2015 that he had stopped developing CrunchBang and that users would benefit from using vanilla Debian. Some Linux distributions have arisen in its place in an effort to continue its environment. Among the most significant are BunsenLabs and CrunchBang++.  a Linux distribution derived from Debian by Philip Newborough (who is more commonly known by his username, corenominal).

CrunchBang was designed to use comparatively few system resources. Instead of a desktop environment it used a customized implementation of the Openbox window manager. Many of its preinstalled applications used the GTK+ widget toolkit. CrunchBang had its own software repository but drew the vast majority of packages from Debian's repositories.