Comparison table of various JVMs

(A work in progress, garnered from various opinions on #harmony/mailing-list by someone with no opinion of his own - HenriYandell)

JVM	License	Platform coverage	Community	Performance	Debuggability
ElectricalFire	"Netscape/Mozilla Public License"	for win32,unix; on x86,ppc,sparc,hppa; with C++	Inactive	JIT
Apple	Proprietary	OS X
BEA JRockit	Proprietary	Windows/Linux
GCJ	Tools are GPL, VM is GNU-Classpath-License	Many?
IBM	Proprietary
IBM J9	Proprietary
IKVM	Custom-BSD-like	.Net/Mono
JCVM	LGPL	*nix: x86
LLVM	Mostly-BSD	x86/sparc/power pc
JamVM	GPL	*nix: x86/Power PC/ARM
JikesRVM	CPL	Linux (x86+PowerPC)/AIX/OS X
Kaffe	GPL	Many
mudGE VM	Modified ZLib	PC, Playstation2, Xbox, Gamecube
ORP	Intel Open Source	Windows/Linux	Inactive
SableVM	LGPL	Many	Active	Average	JVMDI/JDWP
Sun	Various - SCSL/JRL	Windows/Linux/Solaris
JNode	GPL/LGPL	http://jnode.sourceforge.net/portal/node/623 Most of Java 5 except anotations , x86/AMD64 platform, seems to be kind of an OS
joeq	GPL	Windows/Linux x86, Java 1.3/1.4/1.5
jjvm	Unknown	Unknown
kissme	GPL	Linux/x86
CACAO	GPL	Alpha, i386, MIPS (64-bit), PowerPC (32-bit), x86_64	Active	JIT

JVM_Feature_Comparison