Looking Glass is a

desktop environment In computing, a desktop environment (DE) is an implementation of the desktop metaphor made of a bundle of programs running on top of a computer operating system that share a common graphical user interface (GUI), sometimes described as a graphi ...

for computers running the

UNIX Unix (; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

operating system. Developed by Visix Software, it was sold commercially until Visix went out of business. Looking Glass was used as the desktop software bundled with INTERACTIVE UNIX System and Caldera OpenLinux.

References

{{Reflist Desktop environments