... Linux beyond x86
- Alpha - Based on the DEC Alpha CPU series, used mainly in DEC machines and in sysrtems using DEC mainboards.
- ARM / StrongARM / XScale - ARM CPUs have first been used in Acorn's Archimedes machines. Nowadays you can find their successors called StrongARM and XScale primarily in mobile and embedded devices. Most of the PDAs built today use one of these.
- IA-64 - Originally conceived to be the designated successor to x86 and PA RISC, IA-64 turned out to be a server/workstation only architecture that never reached the mass market.
This has also come to Intel's mind, as newer IA-64 CPUs are no longer capable of running x86 code.
- MIPS - Originally part of the ACE initiative MIPS CPUs are used primarily in SGI machines. Also some mobile systems and game consoles use MIPS.
- Motorola 68k - This architecture's base is the Motorola 68000 series of CPUs. As Linux requires a MMU, only later Models of this series are supported.
- PA-RISC - A 32- and 64-bit series of CPUs developed by HP (therefor also called HP-PA) and used in high end workstations, servers and supercomputers. Together with x86, PA is a predecessor of Intel's IA-64 architecture.
- PowerPC - Developed in cooperation of Motorola and IBM, these CPUs are used mainly in Apple's PowerMacs and in IBM's pSeries and iSeries systems (aka RS/6000 and AS/400).
- S/390 - S/390 aka zSeries is a series of IBM mainframes.
- SPARC - The SPARC architecture has been and is still primarily defined by Sun Microsystems. Nevertheless, the SPARC International consortium has many members. The CPUs are also produced by several companies.
- SuperH - An architecture based on the Hitachi SuperH RISC CPUs.