Advanced Computing Environment

The Advanced Computing Environment (ACE) was defined by an industry consortium in the early 1990s to be the next generation commodity computing platform, the successor to personal computers based on Intel's 32-bit instruction set architecture. The effort found little support in the market and dissolved due to a lack of sales and infighting within the group.

The consortium was announced on the 9th of April 1991 by Compaq, Microsoft, MIPS Computer Systems, Digital Equipment Corporation, and the Santa Cruz Operation. At the time it was widely believed that RISC-based systems would maintain a price/performance advantage over the ad hoc Wintel systems. However, it was also widely believed that Windows NT would quickly displace many other operating systems through the combined effects of a wide selection of software and the ease of building Wintel machines that supported it. ACE was formed to provide an alternative platform to Wintel, providing a viable alternative with the same advantages in terms of software support, and greater advantages in terms of performance.

The environment standardized on the MIPS architecture and two operating systems: SCO UNIX with Open Desktop and what would become Windows NT (originally named OS/2 3.0). The Advanced RISC Computing (ARC) document was produced to give hardware and firmware specifications for the platform. Other members of the consortium included Acer, Control Data Corporation, Kubota, NEC Corporation, NKK, Olivetti, Prime Computer, Pyramid Technology, Siemens, Silicon Graphics, Sony, Sumitomo, Tandem Computers, Wang Laboratories, and Zenith Data Systems. Besides these large companies, several start-up companies built ACE-compliant systems as well.

...
Wikipedia