total no of operating systems exist on earth {part:-2}

Operating systems (573)

ECL-3211
eComStation
eCos
EduOS
EGOS
ekkoBSD
Elate
ELKS
Elysium
EOS
EP/IX
EPOC
ERaMS
ERIKA
EROS
ESER
ESIX
Eumel
EuNIX
Exopc
ExOS
Express
Famos
FDOS
Fiasco
Flamethrower
FlashOS
FlexOS
FLP-80 DOS
Flux
Flux-Fluke-Flask
FMS
Forth
FreeBSD
FreeDOS
FreeDOWS
FreeVMS
FullPliant
FunatixOS
FxOS
GazOS
GCOS
GECOS
GeekOS
Gemini Nucleus
Genera
GEORGE
GEOS
GM OS
GNU Hurd
GNUstep
Go
Goah
Gould OS
Grasshopper
GUIDE
Haïku
HA-MSP
Hactar
Harmony
Helios
HES
Hive
HOPE
HP-87 OS
HP-UX
HT-11
Hurd
Hurricane
HydrixOS
i5/OS
IBM PC-DOS
IBSYS
Icaros Desktop
ICL Unix
Immunix
Inferno
INMOS
INTEGRITY RTOS
Iridium OS
IRIX
iRMX
IRTS
ISC (Interactive)
ISIS
ISSL
ITRON
ITS
JAMB
JavaOS
Jbed
JeniOS
Jeo-OS
Jibbed
JOS
JTMOS
JUNOS
JxOS
KAOS
Katix
Kea
Kerberos
KeyKOS
KOS
KRONOS
KROS
KRUD
Kylin
L4
L13Plus
LainOS
LAN Manager
LDOS
LegOS
leJOS
Linux
Lisa OS
LTSS
LynxOS
Möbius
Mach
Mac OS 8
Mac OS 9
Mac OS X
MANOS
MaRTE OS
Maruti
Masix
Maverick OS
MBOS
MCP (Master Control Program)
MDOS
MenuetOS
Merlin
Micriµm
MICRODOS
MicroVMS
MikeOS
Minima
Minix
Minux
Miranda
Miray µnOS
MITE 80/IOS
MK++
ML
ModulOS
Monitor
MorphOS
MOS
MOSIX
MPE/iX
MPE OS
MRT1700
MS-DOS
MSOS
MT809
Multics
Mungi
MUTOS
muVinix
MVS
NachOS
NCR Unix
NEC DOS
NECUX
Nemesis
NeOS
NetBSD
Netware
NewDeal
NEWDOS
NewOS
NEWS-OS
Newton OS
NexentaOS
NeXTStep
NextworksOS
Nexus
Nimbus
Node OS
NOS
NOS/BE
NOS/VE
Nova
Novell DOS
NS/GDOS
NSK
NTDIOS
Nucleus