<s>
Nullsoft	B-Language
Scriptable	I-Language
Install	I-Language
System	I-Language
(	O
NSIS	B-Language
)	O
is	O
a	O
script-driven	O
installer	B-Operating_System
authoring	O
tool	O
for	O
Microsoft	B-Application
Windows	I-Application
backed	O
by	O
Nullsoft	O
,	O
the	O
creators	O
of	O
Winamp	B-Application
.	O
</s>
<s>
NSIS	B-Language
is	O
released	O
under	O
a	O
combination	O
of	O
free	B-License
software	I-License
licenses	I-License
,	O
primarily	O
the	O
zlib	B-License
license	I-License
.	O
</s>
<s>
It	O
has	O
become	O
a	O
widely	O
used	O
alternative	O
to	O
commercial	B-Application
proprietary	B-Application
products	O
like	O
InstallShield	B-Application
,	O
with	O
users	O
including	O
Amazon	B-Application
,	O
Dropbox	B-Application
,	O
Google	B-Application
,	O
Ubisoft	O
,	O
FL	B-Application
Studio	I-Application
,	O
BitTorrent	B-Protocol
,	O
and	O
McAfee	O
.	O
</s>
<s>
NSIS	B-Language
was	O
created	O
to	O
distribute	O
Winamp	B-Application
.	O
</s>
<s>
It	O
is	O
based	O
on	O
a	O
previous	O
Nullsoft	O
product	O
,	O
PiMP	O
(	O
plugin	B-Application
Mini	O
Packager	O
)	O
,	O
and	O
is	O
also	O
known	O
as	O
SuperPiMP	O
.	O
</s>
<s>
After	O
version	O
2.0a0	O
,	O
the	O
project	O
was	O
moved	O
to	O
SourceForge	B-Application
where	O
developers	O
outside	O
Nullsoft	O
started	O
working	O
on	O
it	O
on	O
a	O
regular	O
basis	O
.	O
</s>
<s>
NSIS	B-Language
2.0	O
was	O
released	O
approximately	O
two	O
years	O
later	O
.	O
</s>
<s>
NSIS	B-Language
version	O
1	O
is	O
in	O
many	O
ways	O
similar	O
to	O
the	O
classic	O
Windows	B-Application
Installer	I-Application
,	O
but	O
it	O
supports	O
more	O
compression	O
formats	O
.	O
</s>
<s>
NSIS	B-Language
version	O
2	O
features	O
a	O
new	O
streamlined	O
graphical	B-Application
user	I-Application
interface	I-Application
and	O
supports	O
LZMA	B-General_Concept
compression	O
,	O
multiple	O
languages	O
,	O
and	O
an	O
easy-to-use	O
plugin	B-Application
system	O
.	O
</s>
<s>
In	O
January	O
2006	O
NSIS	B-Language
was	O
SourceForge	B-Application
's	O
project	O
of	O
the	O
month	O
.	O
</s>
<s>
The	O
NSIS	B-Language
compiler	O
program	O
makensis	O
compiles	O
scripts	O
like	O
the	O
following	O
example	O
into	O
executable	O
installation	O
programs	O
.	O
</s>
<s>
Version	O
2.0	O
introduced	O
a	O
new	O
optional	O
streamlined	O
graphical	B-Application
user	I-Application
interface	I-Application
called	O
Modern	O
UI	O
(	O
MUI	O
)	O
.	O
</s>
<s>
Since	O
NSIS	B-Language
version	O
2.30	O
(	O
Released	O
on	O
25	O
August	O
2007	O
)	O
there	O
is	O
new	O
version	O
(	O
beta	O
)	O
of	O
this	O
UI	O
accessible	O
:	O
Modern	O
UI	O
2	O
(	O
MUI2	O
)	O
which	O
is	O
an	O
enhancement	O
to	O
Modern	O
UI	O
.	O
</s>
<s>
From	O
version	O
2.34	O
(	O
Released	O
on	O
24	O
December	O
2007	O
)	O
this	O
MUI2	O
is	O
ready	O
for	O
mass	O
consumption	O
and	O
it	O
is	O
included	O
in	O
all	O
NSIS	B-Language
packages	O
.	O
</s>
<s>
NSIS	B-Language
projects	O
can	O
be	O
configured	O
by	O
simply	O
editing	O
text	O
files	O
(	O
with	O
.nsi	O
extension	O
)	O
.	O
</s>
<s>
EclipseNSIS	B-Language
is	O
a	O
module	O
for	O
the	O
Eclipse	B-Application
platform	I-Application
.	O
</s>
<s>
It	O
allows	O
NSIS	B-Language
scripts	O
to	O
be	O
edited	O
,	O
compiled	O
and	O
validated	O
.	O
</s>
<s>
HM	O
NIS	O
Edit	O
(	O
freeware	O
)	O
editor	O
with	O
support	O
of	O
custom	O
C++	B-Language
or	O
Delphi	B-Language
plug-ins	B-Application
.	O
</s>
<s>
Visual	O
&	O
Installer	B-Operating_System
is	O
an	O
add-in	B-Application
which	O
integrates	O
NSIS	B-Language
with	O
Microsoft	B-Application
Visual	I-Application
Studio	I-Application
IDE	O
and	O
allows	O
to	O
create	O
and	O
build	O
NSIS	B-Language
projects	O
right	O
within	O
it	O
.	O
</s>
<s>
Interfaces	O
such	O
as	O
the	O
ExperienceUI	O
and	O
UltraModernUI	O
completely	O
change	O
the	O
style	O
of	O
the	O
installer	B-Operating_System
by	O
skinning	O
it	O
to	O
look	O
like	O
the	O
InstallShield	B-Application
interface	O
.	O
</s>
<s>
NSIS	B-Language
can	O
be	O
extended	O
with	O
plugins	B-Application
that	O
can	O
communicate	O
with	O
the	O
installer	B-Operating_System
.	O
</s>
<s>
Plugins	B-Application
can	O
be	O
written	O
in	O
any	O
unmanaged	O
programming	O
language	O
capable	O
of	O
building	O
a	O
dynamic-link	O
library	O
(	O
such	O
as	O
C	B-Language
,	O
C++	B-Language
or	O
Delphi	B-Language
)	O
,	O
and	O
they	O
can	O
be	O
used	O
to	O
perform	O
installation	O
tasks	O
or	O
extend	O
the	O
installer	B-Operating_System
interface	O
.	O
</s>
<s>
A	O
plugin	B-Application
can	O
be	O
called	O
with	O
a	O
single	O
line	O
of	O
NSIS	B-Language
code	O
.	O
</s>
<s>
Several	O
plugins	B-Application
come	O
with	O
the	O
NSIS	B-Language
package	O
that	O
permit	O
the	O
installer	B-Operating_System
to	O
display	O
a	O
splash	O
screen	O
,	O
display	O
a	O
custom	O
page	O
,	O
display	O
an	O
image	O
on	O
the	O
background	O
,	O
download	O
files	O
from	O
a	O
website	O
,	O
perform	O
mathematical	O
operations	O
,	O
patch	O
files	O
and	O
more	O
.	O
</s>
<s>
Other	O
plugins	B-Application
are	O
available	O
online	O
,	O
including	O
ZipDLL	O
,	O
and	O
a	O
Python	B-Language
plugin	B-Application
.	O
</s>
<s>
NSIS	B-Language
supports	O
the	O
following	O
features	O
:	O
</s>
<s>
The	O
generated	O
installer	B-Operating_System
is	O
a	O
Portable	O
Executable	O
,	O
with	O
the	O
installation	O
files	O
archived	O
within	O
the	O
installer	B-Operating_System
,	O
a	O
34	O
KB	O
overhead	O
for	O
the	O
NSIS	B-Language
installer	B-Operating_System
,	O
and	O
the	O
installation	O
script	O
compiled	O
into	O
executable	O
code	O
.	O
</s>
<s>
The	O
archive	O
may	O
be	O
unpacked	O
using	O
7-Zip	B-Language
,	O
the	O
Total	B-Language
Commander	I-Language
plugin	B-Application
InstallExplorer	O
,	O
or	O
the	O
FAR	B-Language
Manager	I-Language
plugin	B-Application
InstallExplorer	O
.	O
</s>
<s>
The	O
generated	O
installer	B-Operating_System
includes	O
command	O
line	O
arguments	O
in	O
order	O
to	O
give	O
users	O
more	O
control	O
:	O
</s>
<s>
/S	O
runs	O
the	O
installer/uninstaller	O
silently	O
.	O
</s>
<s>
Versions	O
of	O
NSIS	B-Language
before	O
3.0	O
did	O
not	O
support	O
Unicode	O
,	O
but	O
only	O
a	O
means	O
to	O
convert	O
some	O
files	O
to	O
different	O
encodings	O
via	O
a	O
plugin	B-Application
.	O
</s>
<s>
However	O
,	O
a	O
variant	O
of	O
NSIS	B-Language
that	O
has	O
full	O
Unicode	O
support	O
is	O
available	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
version	O
3.0	O
of	O
NSIS	B-Language
,	O
Unicode	O
support	O
can	O
be	O
implemented	O
using	O
the	O
compiler	O
directive	O
"	O
Unicode	O
true	O
"	O
.	O
</s>
<s>
This	O
gives	O
full	O
Unicode	O
support	O
with	O
no	O
further	O
code	O
changes	O
,	O
but	O
the	O
installer	B-Operating_System
will	O
not	O
run	O
under	O
Windows	O
95/98/Me	O
.	O
</s>
<s>
As	O
of	O
2016	O
before	O
the	O
3.0	O
release	O
NSIS	B-Language
was	O
available	O
in	O
the	O
PortableApps	B-Application
format	O
for	O
Unicode	O
2.46.5	O
Rev	O
3	O
and	O
ANSI	O
2.51	O
.	O
</s>
