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User Mode Linux (UML)
from Jeff Dike
User Mode Linux runs a complete Linux Kernel as a user mode process on top
of a Linux Kernel running on real hardware.
Lists a number of
related projects
(more than I do here).
Jeff Dike's UML is not the same as our FAUmachine, although they evolved
round about at the same time and based on the same principles.
Since then the two have diverged quite a lot.
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QEMU
from Fabrice Bellard
QEMU is a fast processor emulator. Using dynamic translation it achieves a
reasonable speed while being easy to port to new host CPUs. In its user mode
emulation mode, it can launch Linux processes compiled for one CPU on another
CPU. In its full system emulation mode, it emulates a full system,
including a processor and various peripherials.
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VMWare[tm]
VMWare[tm] is a virtual machine which runs
as usermode process in Linux (or MS Windows).
A number of OS built for x86 can be installed
on this virtual machine.
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Virtual PC[tm]
Virtual machine originally implementated by Connectix and bought by Microsoft.
It runs on a variety of Microsoft OS and runs a number of different
OS including Linux.
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Plex86
Formerly named FreeMware, an open source project to implement a virtual
machine, onto which different OS built for x86 can be installed.
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Simics[tm]
Simics simulates a processor at instruction set level. It is capable of
simulating high-end target systems with sufficient speed to boot and run
operating systems and commercial workloads.
According to information from Simics people, it is also capable of fault
injection into the simulated hardware.
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Bochs
Open source IA-32 processor & hardware simulator.
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SimOS
Stanford University mips and alpha hardware simulator.
