<s>
MKS	B-Application
Toolkit	I-Application
is	O
a	O
software	O
package	O
produced	O
and	O
maintained	O
by	O
PTC	O
that	O
provides	O
a	O
Unix-like	B-Operating_System
environment	O
for	O
scripting	O
,	O
connectivity	O
and	O
porting	O
Unix	B-Application
and	O
Linux	B-Application
software	O
to	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
It	O
was	O
originally	O
created	O
for	O
MS-DOS	B-Application
,	O
and	O
OS/2	B-Application
versions	O
were	O
released	O
up	O
to	O
version	O
4.4	O
.	O
</s>
<s>
Several	O
editions	O
of	O
each	O
version	O
,	O
such	O
as	O
MKS	B-Application
Toolkit	I-Application
for	O
developers	B-Application
,	O
power	B-General_Concept
users	I-General_Concept
,	O
enterprise	O
developers	B-Application
and	O
interoperability	O
are	O
available	O
,	O
with	O
the	O
enterprise	O
developer	B-Application
edition	O
being	O
the	O
most	O
complete	O
.	O
</s>
<s>
Before	O
PTC	O
,	O
MKS	B-Application
Toolkit	I-Application
was	O
owned	O
by	O
MKS	O
Inc	O
.	O
</s>
<s>
In	O
1999	O
,	O
MKS	O
acquired	O
a	O
company	O
based	O
in	O
Fairfax	O
,	O
Virginia	B-Application
,	O
USA	O
called	O
Datafocus	O
Inc	O
.	O
</s>
<s>
The	O
Datafocus	O
product	O
NuTCRACKER	O
had	O
included	O
the	O
MKS	B-Application
Toolkit	I-Application
since	O
1994	O
as	O
part	O
of	O
its	O
Unix	B-Application
compatibility	O
technology	O
.	O
</s>
<s>
The	O
MKS	B-Application
Toolkit	I-Application
was	O
also	O
licensed	O
by	O
Microsoft	O
for	O
the	O
first	O
two	O
versions	O
of	O
their	O
Windows	O
Services	O
for	O
Unix	B-Application
,	O
but	O
later	O
dropped	O
in	O
favor	O
of	O
Interix	B-Operating_System
after	O
Microsoft	O
purchased	O
the	O
latter	O
company	O
.	O
</s>
<s>
The	O
MKS	B-Application
Toolkit	I-Application
products	O
offer	O
functionality	O
in	O
the	O
following	O
areas	O
:	O
</s>
<s>
MKS	B-Application
Toolkit	I-Application
products	O
support	O
all	O
IA-32	B-Device
and	O
x64	B-Device
of	O
the	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
systems	I-Application
.	O
</s>
<s>
There	O
is	O
some	O
loss	O
of	O
functionality	O
running	O
IA-32	B-Device
versions	O
on	O
Windows	O
9x	O
.	O
</s>
<s>
Earlier	O
versions	O
ran	O
on	O
MS-DOS	B-Application
and	O
compatible	O
operating	O
systems	O
.	O
</s>
