The NeXTcube was a high-end workstation computer developed, manufactured and sold by NeXT from 1990 until 1993. It superseded the original NeXT Computer workstation and was housed in a similar cube-shaped magnesium enclosure. The workstation ran the NeXTSTEP operating system. It is famous as the world's first Web Server, used by Sir Tim Berners-Lee at CERN to create the first web page on December 25th 1990.
The NeXTcube was a development of the original NeXT Computer. It differed from its predecessor in having a 25 MHz 68040 processor, larger hard disks in place of the MO drive and an optional floppy disk drive. A 33 MHz NeXTcube Turbo was produced later.
Most serious Mac users would admit that OS X owes as much or more of its origins to NeXTSTEP, the NeXT OS, than classic Macintosh OS. Steve Jobs left Apple in 1985 after a struggle with then CEO, John Sculley, whose myopic view of the computer industry nearly destroyed Apple in the 1990s. Jobs went on to found NeXT, which failed to find widespread acceptance in the market place. The software lived on but the NeXT computer system was an utter failure. Thankfully, in 1996, Apple bought NeXT for $402 million, bringing Jobs back to the company he founded. In 1997 he became Apple's interim CEO after the directors lost confidence in and ousted then-CEO Gil Amelio in a boardroom coup.
NeXT also released the NeXTdimension for the NeXTcube, a circuit board based on an Intel i860 processor, which offers 32-bit PostScript color display and video sampling features.
There was also a very rare accelerator board known as the Nitro; very few (estimated to be between 5 and 20) were ever made. It increased the speed of a NeXTcube by replacing the standard 25 or 33 MHz processor with a 40 MHz one.