i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Kompyte - Track & analyze competitors in real time.
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
BuiltWith - Find out the technology behind websites
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.
Vistaar - Vistaar is an innovator of price and revenue management solutions. Vistaar’s pricing software enables companies to achieve pricing best practices through price analytics, price optimization, price list management, and deal management.