<s>
This	O
is	O
a	O
list	O
of	O
file	O
formats	O
used	O
by	O
archivers	O
and	O
compressors	O
used	O
to	O
create	O
archive	B-Application
files	I-Application
.	O
</s>
<s>
File	O
extension(s )	O
File	O
extensions	O
may	O
differ	O
across	O
platforms	O
.	O
</s>
<s>
The	O
case	O
of	O
these	O
extensions	O
may	O
differ	O
on	O
case-insensitive	O
platforms.MIME	O
typeMIME	O
media	O
types	O
may	O
be	O
conjectural	O
.	O
</s>
<s>
Compression-only	O
formats	O
should	O
often	O
be	O
denoted	O
by	O
the	O
media	O
type	O
of	O
the	O
decompressed	O
data	O
,	O
with	O
a	O
content	O
coding	O
indicating	O
the	O
compression	O
format.Official	O
nameOfficial	O
names	O
may	O
be	O
disputed.PlatformCreation	O
platform	O
indicates	O
the	O
platform(s )	O
under	O
which	O
a	O
format	O
can	O
be	O
created.Description.a	O
,	O
.arapplication/x	O
-archiveUnix	O
ArchiverUnix-likeThe	O
traditional	O
archive	B-Application
format	O
on	O
Unix-like	B-Operating_System
systems	I-Operating_System
,	O
now	O
used	O
mainly	O
for	O
the	O
creation	O
of	O
static	B-Library
libraries	I-Library
..	O
cpioapplication	O
-cpiocpioUnix-likeRPM	O
files	O
consist	O
of	O
metadata	O
concatenated	O
with	O
(	O
usually	O
)	O
a	O
cpio	B-Application
archive	B-Application
.	O
</s>
<s>
Newer	O
RPM	B-Application
systems	O
also	O
support	O
other	O
archives	O
,	O
as	O
cpio	B-Application
is	O
becoming	O
obsolete	O
.	O
</s>
<s>
LBR	B-Application
archives	O
typically	O
contained	O
files	O
processed	O
by	O
SQ	B-Application
,	O
or	O
the	O
archive	B-Application
itself	O
was	O
compressed	O
with	O
SQ	B-Application
.	O
</s>
<s>
LBR	B-Application
archives	O
that	O
were	O
compressed	O
with	O
SQ	B-Application
ended	O
with	O
the	O
extension	B-Application
.LQR.isoapplication/x	O
-iso9660-imageISO-9660	O
image( Various	O
;	O
cross	B-Operating_System
platform	I-Operating_System
)	O
An	O
archive	B-Application
format	O
originally	O
used	O
mainly	O
for	O
archiving	O
and	O
distribution	O
of	O
the	O
exact	O
,	O
nearly-exact	O
,	O
or	O
custom-modified	O
contents	O
of	O
an	O
optical	O
storage	O
medium	O
such	O
as	O
a	O
CD-ROM	O
or	O
DVD-ROM	O
.	O
</s>
<s>
However	O
,	O
it	O
can	O
be	O
used	O
to	O
archive	B-Application
the	O
contents	O
of	O
other	O
storage	O
media	O
,	O
selected	O
partitions	O
,	O
folders	O
,	O
and/or	O
files	O
.	O
</s>
<s>
The	O
resulting	O
archive	B-Application
is	O
typically	O
optimized	O
for	O
convenient	O
rendering	O
to	O
(	O
re	O
-	O
)	O
writable	O
CD	O
or	O
DVD	O
media	O
.	O
</s>
<s>
This	O
bears	O
no	O
resemblance	O
to	O
the	O
DOS	B-Device
LBR	B-Application
format	O
.	O
</s>
<s>
While	O
library	O
files	O
were	O
quick	O
to	O
implement	O
(	O
a	O
number	O
of	O
programs	O
exist	O
to	O
work	O
with	O
them	O
)	O
they	O
are	O
crippled	O
in	O
that	O
they	O
cannot	O
grow	O
with	O
use	O
:	O
once	O
a	O
file	O
has	O
been	O
created	O
it	O
cannot	O
be	O
amended	O
(	O
files	O
added	O
,	O
changed	O
or	O
deleted	O
)	O
without	O
recreating	O
the	O
entire	O
file	O
..	O
marMozilla	O
ARchive( Various	O
;	O
cross	B-Operating_System
platform	I-Operating_System
)	O
An	O
archive	B-Application
format	O
used	O
by	O
Mozilla	O
for	O
storing	O
binary	O
diffs	B-Application
.	O
</s>
<s>
Used	O
in	O
conjunction	O
with	O
bzip2	B-Application
..	O
sbxapplication	O
-sbxSeqBox	O
( Various	O
;	O
cross	B-Operating_System
platform	I-Operating_System
)	O
A	O
single	O
file	O
container/archive	O
that	O
can	O
be	O
reconstructed	O
even	O
after	O
total	O
loss	O
of	O
file	O
system	O
structures	O
..	O
tarapplication	O
-tarTape	O
archiveUnix-likeA	O
common	O
archive	B-Application
format	O
used	O
on	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Generally	O
used	O
in	O
conjunction	O
with	O
compressors	O
such	O
as	O
gzip	B-Application
,	O
bzip2	B-Application
,	O
compress	B-General_Concept
or	O
xz	B-Language
to	O
create	O
.tar.gz	O
,	O
.tar.bz2	O
,	O
.tar.Z	O
or	O
tar.xz	B-Application
files	O
.	O
</s>
<s>
File	O
extension(s )	O
MIME	B-Protocol
typeOfficial	O
namePlatformDescription.brapplication/x	O
-brotliBrotliallBrotli	O
is	O
a	O
compression	B-General_Concept
algorithm	I-General_Concept
developed	O
by	O
Google	B-Application
for	O
textual	O
web	O
content	O
,	O
and	O
typically	O
achieves	O
higher	O
compression	O
ratios	O
than	O
other	O
algorithms	O
for	O
this	O
use	O
case	O
..	O
bz2application	O
-bzip2bzip2Unix-likeAn	O
open	O
source	O
,	O
patent	O
-	O
and	O
royalty-free	O
compression	O
format	O
.	O
</s>
<s>
The	O
compression	B-General_Concept
algorithm	I-General_Concept
is	O
a	O
Burrows	B-Algorithm
–	I-Algorithm
Wheeler	I-Algorithm
transform	I-Algorithm
followed	O
by	O
a	O
move-to-front	B-Algorithm
transform	I-Algorithm
and	O
finally	O
Huffman	B-General_Concept
coding	I-General_Concept
..	O
F	O
,	O
.	O
</s>
<s>
?	O
XFIf	O
attaching	O
.F	O
to	O
the	O
file	O
name	O
is	O
not	O
possible	O
with	O
the	O
DOS	B-Device
operating	B-General_Concept
system	I-General_Concept
,	O
the	O
second	O
and	O
third	O
character	O
of	O
the	O
filename	O
extension	B-Application
are	O
replaced	O
by	O
XF.Freeze/melt	O
QNX4	B-Operating_System
,	O
Unix-like	B-Operating_System
and	O
DOSOld	O
compressor	B-General_Concept
for	O
QNX4	B-Operating_System
OS	O
.	O
</s>
<s>
The	O
compression	B-General_Concept
algorithm	I-General_Concept
is	O
a	O
modified	O
LZSS	B-Algorithm
,	O
with	O
an	O
adaptive	O
Huffman	B-General_Concept
coding	I-General_Concept
..	O
genozipapplication	O
,	O
macOS	B-Application
,	O
WindowsGenozip	O
,	O
a	O
compressor	B-General_Concept
for	O
genomic	O
file	O
formats	O
such	O
as	O
FASTQ	O
,	O
BAM	O
,	O
VCF	O
and	O
others.Genozip	O
-	O
A	O
Universal	O
Extensible	O
Genomic	O
Data	O
Compressor	B-General_Concept
https://academic.oup.com/bioinformatics/article/37/16/2225/6135077.gzapplication/gzipgzipUnix-likeGNU	O
Zip	B-General_Concept
,	O
the	O
primary	O
compression	O
format	O
used	O
by	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
The	O
compression	B-General_Concept
algorithm	I-General_Concept
is	O
Deflate	B-Algorithm
,	O
which	O
combines	O
LZSS	B-Algorithm
with	O
Huffman	B-General_Concept
coding	I-General_Concept
..	O
lzapplication	O
-lziplzipUnix-likeAn	O
alternate	O
LZMA	B-General_Concept
algorithm	O
implementation	O
,	O
with	O
support	O
for	O
checksums	O
and	O
ident	O
bytes	O
..	O
lz4LZ4Unix	O
developed	O
by	O
Yann	O
Collet	O
,	O
designed	O
for	O
very	O
high	O
(	O
de	O
)	O
compression	O
speeds	O
.	O
</s>
<s>
It	O
is	O
an	O
LZ77	O
derivative	O
,	O
without	O
entropy	B-Algorithm
encoding	I-Algorithm
..	O
lzmaapplication	O
-lzmalzmaUnix-likeThe	O
LZMA	B-General_Concept
compression	B-General_Concept
algorithm	I-General_Concept
as	O
used	O
by	O
Zip	O
..	O
lzoapplication	O
-lzoplzopUnix-likeAn	O
implementation	O
of	O
the	O
LZO	B-Language
data	B-General_Concept
compression	I-General_Concept
algorithm	I-General_Concept
..	O
rzrzipUnix	O
compression	B-General_Concept
program	I-General_Concept
designed	O
to	O
do	O
particularly	O
well	O
on	O
very	O
large	O
files	O
containing	O
long	O
distance	O
redundancy	O
..	O
sfarksfArkWindows	O
compress/decompress	O
-	O
Linux	B-Application
and	O
macOS	B-Application
decompress	O
onlyA	O
compression	B-General_Concept
program	I-General_Concept
designed	O
to	O
do	O
high	O
compression	O
on	O
SF2	O
files	O
(	O
SoundFont	B-Application
)	O
szapplication	O
..	O
-snappy-framedSnappyUnix-likeA	O
compression	O
format	O
developed	O
by	O
Google	B-Application
,	O
and	O
open-sourced	O
in	O
2011	O
.	O
</s>
<s>
Snappy	B-Language
aims	O
for	O
very	O
high	O
speeds	O
,	O
reasonable	O
compression	O
,	O
and	O
maximum	O
stability	O
rather	O
than	O
maximum	O
compression	O
or	O
compatibility	O
with	O
any	O
other	O
compression	O
library	O
.	O
</s>
<s>
It	O
is	O
an	O
LZ77	O
derivative	O
,	O
without	O
entropy	B-Algorithm
encoding	I-Algorithm
..	O
?	O
Q	O
?	O
SQCP/M	O
and	O
DOSSqueeze	O
:	O
A	O
program	O
which	O
compressed	O
files	O
using	O
Huffman	B-General_Concept
coding	I-General_Concept
.	O
</s>
<s>
Typically	O
used	O
with	O
.LBR	B-Application
archives	O
,	O
either	O
by	O
storing	O
the	O
squeezed	O
files	O
in	O
the	O
archive	B-Application
,	O
or	O
by	O
storing	O
the	O
files	O
decompressed	O
and	O
then	O
compressing	O
the	O
archive	B-Application
,	O
which	O
would	O
have	O
a	O
name	O
ending	O
in	O
"	O
.LQR	B-Application
"	O
..	O
?	O
Z	B-Device
?	O
CRUNCHCP/M	O
and	O
DOSA	O
compression	B-General_Concept
program	I-General_Concept
written	O
by	O
Steven	O
Greenberg	O
implementing	O
the	O
LZW	B-Algorithm
algorithm	I-Algorithm
.	O
</s>
<s>
For	O
several	O
years	O
in	O
the	O
CP/M	B-Application
world	O
when	O
no	O
implementation	O
was	O
available	O
of	O
ARC	B-Application
,	O
CRUNCHed	O
files	O
stored	O
in	O
.LBR	B-Application
archives	O
were	O
very	O
popular	O
.	O
</s>
<s>
CRUNCH	O
's	O
implementation	O
of	O
LZW	B-Algorithm
had	O
a	O
somewhat	O
unusual	O
feature	O
of	O
modifying	O
and	O
occasionally	O
clearing	O
the	O
code	O
table	O
in	O
memory	O
when	O
it	O
became	O
full	O
,	O
resulting	O
in	O
a	O
few	O
percent	O
better	O
compression	O
on	O
many	O
files	O
..	O
xzapplication	O
-xzxzUnix-likeA	O
compression	O
format	O
using	O
LZMA2	B-General_Concept
to	O
yield	O
high	O
compression	O
ratios	O
.	O
</s>
<s>
The	O
LZMA	B-General_Concept
algorithm	O
is	O
an	O
LZ77	O
derivative	O
,	O
with	O
entropy	B-Algorithm
encoding	I-Algorithm
in	O
the	O
form	O
of	O
range	B-Algorithm
encoding	I-Algorithm
..	O
zapplication	O
-compresspackUnix-likeThe	O
traditional	O
Huffman	B-General_Concept
coding	I-General_Concept
compression	O
format	O
..	O
Zapplication	O
-compresscompressUnix-likeThe	O
traditional	O
LZW	B-Algorithm
compression	I-Algorithm
format	O
..	O
zstapplication	O
-platformAlgorithm	O
developed	O
by	O
Yann	O
Collet	O
at	O
Facebook	B-Application
,	O
combining	O
high	O
speed	O
and	O
high	O
compression	O
.	O
</s>
<s>
It	O
is	O
an	O
LZ77	O
derivative	O
,	O
with	O
entropy	B-Algorithm
encoding	I-Algorithm
in	O
the	O
form	O
of	O
finite-state	O
entropy	O
and	O
Huffman	B-General_Concept
coding	I-General_Concept
..	O
?	O
</s>
<s>
?	O
_MS-DOS/WindowsCompression	O
format(s )	O
used	O
by	O
some	O
DOS	B-Device
and	O
Windows	B-Application
install	O
programs	O
.	O
</s>
<s>
MS-DOS	O
includes	O
expand.exe	O
to	O
decompress	O
its	O
install	O
files	O
.	O
</s>
<s>
The	O
compressed	O
files	O
are	O
created	O
with	O
a	O
matching	O
compress.exe	O
command	O
.	O
</s>
<s>
The	O
compression	B-General_Concept
algorithm	I-General_Concept
is	O
LZSS	B-Algorithm
.	O
</s>
<s>
File	O
extension(s )	O
MIME	B-Protocol
typeOfficial	O
nameCreation	O
platformRestoration	O
platformRestoration	O
platform	O
indicates	O
the	O
platform(s )	O
under	O
which	O
a	O
format	O
can	O
be	O
restored/extracted	O
.	O
</s>
<s>
Most	O
file	O
formats	O
can	O
be	O
understood	O
by	O
more	O
than	O
one	O
platform.Restorable	O
with	O
free	B-Application
software	I-Application
"	O
Restorable	O
with	O
free	B-Application
software	I-Application
"	O
indicates	O
whether	O
the	O
format	O
can	O
be	O
restored	O
using	O
an	O
extraction	O
tool	O
that	O
is	O
free	O
software.Description.7zapplication/x	O
-7z-compressed7zMultipleMultipleOpen	O
source	O
file	O
format	O
.	O
</s>
<s>
Used	O
by	O
Zip	O
..	O
s7zapplication	O
-7z-compressed7zXmacOSmacOS	O
,	O
restoration	O
on	O
different	O
platforms	O
is	O
possible	O
although	O
not	O
immediateBased	O
on	O
7z	O
.	O
</s>
<s>
Made	O
obsolete	O
by	O
the	O
introduction	O
of	O
AppleDouble-encoded	O
7z	O
archives	O
(	O
Macintosh	B-Device
only	O
)	O
aceapplication	O
..	O
-ace-compressedACEWindowsMultipleProprietary	O
format.afaapplication/x	O
-astrotite-afaAFAUNIX-likeUNIX-likeA	O
format	O
that	O
compresses	O
and	O
doubly	O
encrypt	O
the	O
data	O
(	O
AES256	O
and	O
CAS256	O
)	O
avoiding	O
brute	O
force	O
attacks	O
,	O
also	O
hide	O
files	O
in	O
an	O
AFA	O
file	O
.	O
</s>
<s>
It	O
has	O
two	O
ways	O
to	O
safeguard	O
data	O
integrity	O
and	O
subsequent	O
repair	O
of	O
the	O
file	O
if	O
has	O
an	O
error	O
(	O
repair	O
with	O
AstroA2P	O
(	O
online	O
)	O
or	O
Astrotite	O
(	O
offline	O
)	O
)	O
alzapplication	O
..	O
-alz-compressedALZipWindowsMultipleA	O
mainly	O
Korean	O
format	O
designed	O
for	O
very	O
large	O
archives	O
..	O
apkapplication	O
-archiveAPKMultipleMultipleAndroid	O
application	O
package	B-Application
(	O
variant	O
of	O
JAR	B-Language
file	I-Language
format	I-Language
)	O
arc	O
..	O
,	O
.arkapplication/octet	O
-streamARCMultipleMultipleVery	O
popular	O
in	O
the	O
early	O
days	O
of	O
BBSes	B-Application
,	O
one	O
of	O
the	O
first	O
to	O
offer	O
compression	O
and	O
archiving	O
in	O
a	O
single	O
program	O
.	O
</s>
<s>
Largely	O
replaced	O
by	O
PKZIP	B-Application
..	O
arc	O
,	O
.cdxapplication/x	O
-freearcFreeArcWindows	O
,	O
LinuxWindows	O
,	O
LinuxOpen	O
source	O
file	O
format	O
developed	O
by	O
Bulat	O
Ziganshin	O
.	O
</s>
<s>
A	O
"	O
FreeArc	B-Application
Next	O
"	O
version	O
is	O
under	O
development	O
which	O
includes	O
Zstandard	B-Language
support	O
..	O
arjapplication	O
-arjARJOriginally	O
DOS	B-Device
,	O
now	O
multipleMultipleCompetitor	O
to	O
PKZIP	B-Application
in	O
the	O
1990s	O
,	O
offered	O
better	O
multi-part	O
archive	B-Application
handling	O
..	O
b1application	O
-b1B1MultipleMultipleOpen	O
archive	B-Application
format	O
,	O
used	O
by	O
B1	B-Application
Free	I-Application
Archiver	I-Application
(	O
http://dev.b1.org/standard/archive-format.html	O
)	O
.b6zB6ZmacOSMultipleCompressed	O
archive	B-Application
format	O
B6Zip.baSciferMultipleMultipleBinary	O
Archive	B-Application
with	O
external	O
header.bhBlakHoleProprietary	O
format	O
from	O
the	O
ZipTV	O
Compression	O
Components.cabapplication/vnd.ms	O
-cab-compressedCabinetWindowsMultipleThe	O
Microsoft	B-Application
Windows	I-Application
native	O
archive	B-Application
format	O
,	O
which	O
is	O
also	O
used	O
by	O
many	O
commercial	O
installers	O
such	O
as	O
WISE	B-Application
..	O
carCompressia	O
archiveOriginally	O
DOS	B-Device
,	O
now	O
DOS	B-Device
and	O
WindowsOriginally	O
DOS	B-Device
,	O
now	O
DOS	B-Device
and	O
WindowsCreated	O
by	O
Yaakov	O
Gringeler	O
;	O
released	O
last	O
in	O
2003	O
(	O
Compressia	O
1.0.0.1	O
beta	O
)	O
,	O
now	O
apparently	O
defunct	O
.	O
</s>
<s>
Free	O
trial	O
of	O
30	O
days	O
lets	O
user	O
create	O
and	O
extract	O
archives	O
;	O
after	O
that	O
it	O
is	O
possible	O
to	O
extract	O
,	O
but	O
not	O
to	O
create	O
..	O
cfsapplication	O
-cfs-compressedCompact	O
File	O
SetWindows	O
,	O
Unix-like	B-Operating_System
including	O
macOSMultipleOpen	O
source	O
file	O
format	O
.	O
</s>
<s>
.cptCompact	O
ProClassic	O
Mac	B-Device
OSMultiple	O
Compact	B-Operating_System
Pro	I-Operating_System
archive	B-Application
,	O
a	O
common	O
archiver	B-Application
used	O
on	O
Mac	B-Device
platforms	O
until	O
about	O
Mac	B-Device
OS	O
7.5.x	O
.	O
</s>
<s>
Competed	O
with	O
StuffIt	B-Application
;	O
now	O
obsolete	O
..	O
darapplication	O
-darDisk	O
ArchiverUnix-like	O
including	O
macOSUnix-like	O
including	O
macOS	B-Application
,	O
WindowsOpen	O
source	O
file	O
format	O
.	O
</s>
<s>
Files	O
are	O
compressed	O
individually	O
with	O
either	O
gzip	B-Application
,	O
bzip2	B-Application
or	O
lzo	B-Language
..	O
ddDiskDoublerClassic	O
Mac	B-Application
OS	I-Application
obsolete.dgcapplication/x-dgc-compressedDGCAWindowsWindows.dmgapplication/x	O
-apple-diskimageApple	O
Disk	O
ImagemacOSmacOS	O
,	O
Windows	B-Application
,	O
LinuxSupports	O
"	O
Internet-enabled	O
"	O
disk	O
images	O
,	O
which	O
,	O
once	O
downloaded	O
,	O
are	O
automatically	O
decompressed	O
,	O
mounted	O
,	O
have	O
the	O
contents	O
extracted	O
,	O
and	O
thrown	O
away	O
.	O
</s>
<s>
Currently	O
,	O
Safari	B-Application
is	O
the	O
only	O
browser	O
that	O
supports	O
this	O
form	O
of	O
extraction	O
;	O
however	O
,	O
the	O
images	O
can	O
be	O
manually	O
extracted	O
as	O
well	O
.	O
</s>
<s>
This	O
format	O
can	O
also	O
be	O
password-protected	O
or	O
encrypted	O
with	O
128-bit	O
or	O
256-bit	O
AES	O
encryption	O
..	O
earEARMultipleMultipleEnterprise	O
Java	B-Language
Archive	I-Language
archive	B-Application
.gcaapplication/x	O
-gca-compressedGCAThe	O
predecessor	O
of	O
DGCA	B-Application
..	O
genozipGenozipLinux	O
,	O
macOS	B-Application
,	O
WindowsLinux	O
,	O
macOS	B-Application
,	O
WindowsOptimized	O
for	O
(	O
but	O
not	O
limited	O
to	O
)	O
genomic	O
file	O
types	O
such	O
as	O
FASTQ	O
,	O
BAM	O
,	O
VCF.haOriginally	O
DOSOriginally	O
DOS	B-Device
,	O
but	O
may	O
be	O
covered	O
by	O
patentsDOS	O
era	O
format	O
;	O
uses	O
arithmetic/Markov	O
coding.hkiWinHKIMS	O
WindowsMS	O
WindowsHKI.iceICEWindowsWindowsProduced	O
by	O
ICEOWS	O
program	O
.	O
</s>
<s>
Excels	O
at	O
text	O
file	B-General_Concept
compression	I-General_Concept
..	O
jarapplication	O
-archiveJARMultipleMultipleJava	O
archive	B-Application
,	O
compatible	O
with	O
ZIP	O
files.kgbKGB	O
ArchiverMultipleMultipleOpen	O
sourced	O
archiver	B-Application
with	O
compression	O
using	O
the	O
PAQ	B-Application
family	O
of	O
algorithms	O
and	O
optional	O
encryption	O
..	O
lzh	O
,	O
.lhaapplication/x	O
-lzhLHAOriginally	O
DOS	B-Device
,	O
now	O
multipleMultipleThe	O
standard	O
format	O
on	O
Amiga	B-Device
..	O
lzxapplication	O
-lzxLZXAmigaArchiver	O
originally	O
used	O
on	O
The	O
Amiga	B-Device
.	O
</s>
<s>
Now	O
copied	O
by	O
Microsoft	O
to	O
use	O
in	O
their	O
.cab	O
and	O
.chm	O
files	O
..	O
pakPAKHP	O
NonStopHP	O
NonStopTandem	O
Unpak	O
GUI	O
http://sybond.web.id/project/?p=8file	O
format	O
from	O
NoGate	O
Consultings	O
,	O
a	O
rival	O
from	O
ARC-Compressor	O
.	O
</s>
<s>
.pak	O
was	O
also	O
briefly	O
used	O
by	O
the	O
short	O
lived	O
MSDOS	O
PKPAK	O
program	O
..	O
partimgPartImageMultipleMultipleA	O
disk	O
image	O
archive	B-Application
format	O
that	O
supports	O
several	O
compression	O
methods	O
as	O
well	O
as	O
splitting	O
the	O
archive	B-Application
into	O
smaller	O
pieces	O
..	O
paq6	B-Application
,	O
.paq7	O
,	O
.paq8	O
and	O
variantsPAQUnix-like	O
and	O
WindowsUnix-like	O
and	O
WindowsAn	O
experimental	O
open	O
source	O
packager	O
(	O
http://mattmahoney.net/dc	O
)	O
.peaPeaZipLinux	O
and	O
WindowsLinux	O
and	O
WindowsOpen	O
source	O
archiver	B-Application
supporting	O
authenticated	O
encryption	O
,	O
cascaded	O
encryption	O
,	O
volume	O
spanning	O
,	O
customizable	O
object	O
level	O
and	O
volume	O
level	O
integrity	O
checks	O
(	O
form	O
CRCs	O
to	O
SHA-512	B-Algorithm
and	O
Whirlpool	B-Algorithm
hashes	I-Algorithm
)	O
,	O
fast	O
deflate	B-Algorithm
based	O
compression.pharPHARMultipleMultipleA	O
package	B-Application
format	O
to	O
enable	O
distribution	O
of	O
applications	O
and	O
libraries	O
by	O
bundling	O
many	O
PHP	O
code	O
files	O
and	O
other	O
resources	O
(	O
e.g.	O
</s>
<s>
It	O
uses	O
an	O
LZP-based	O
compression	B-General_Concept
algorithm	I-General_Concept
with	O
set	O
of	O
filters	O
for	O
executable	O
,	O
image	O
and	O
audio	O
files	O
..	O
pitPackItClassic	O
Mac	B-Application
OS	I-Application
obsolete.qdaQuadruple	O
DWindowsWindowsUsed	O
for	O
data	O
in	O
games	O
written	O
using	O
the	O
Quadruple	O
D	O
library	O
for	O
Delphi	B-Language
.	O
</s>
<s>
Uses	O
byte	B-Algorithm
pair	I-Algorithm
compression	I-Algorithm
..	O
rarapplication	O
-rar-compressedRAROriginally	O
DOS	B-Device
,	O
now	O
multipleMultipleA	O
popular	O
proprietary	B-Application
archive	B-Application
format	O
..	O
rk	O
RK	O
and	O
WinRK	O
MultipleMultipleThe	O
format	O
from	O
a	O
commercial	O
archiving	O
package	B-Application
.	O
</s>
<s>
Odd	O
among	O
commercial	O
packages	O
in	O
that	O
they	O
focus	O
on	O
incorporating	O
experimental	O
algorithms	O
with	O
the	O
highest	O
possible	O
compression	O
(	O
at	O
the	O
expense	O
of	O
speed	O
and	O
memory	O
)	O
,	O
such	O
as	O
PAQ	B-Application
,	O
PPMD	B-Algorithm
and	O
PPMZ	O
(	O
PPMD	B-Algorithm
with	O
unlimited-length	O
strings	O
)	O
,	O
as	O
well	O
as	O
a	O
proprietary	B-Application
algorithms	O
..	O
sdaSelf	O
Dissolving	O
ARChiveCommodore	O
64	O
,	O
Commodore	O
128Commodore	O
64	O
,	O
Commodore	O
128SDAs	O
refer	O
to	O
Self	O
Dissolving	O
ARC	B-Application
files	I-Application
,	O
and	O
are	O
based	O
on	O
the	O
Commodore	O
64	O
and	O
Commodore	O
128	O
versions	O
of	O
ARC	B-Application
,	O
originally	O
written	O
by	O
Chris	O
Smeets	O
.	O
</s>
<s>
While	O
the	O
files	O
share	O
the	O
same	O
extension	B-Application
,	O
they	O
are	O
not	O
compatible	O
between	O
platforms	O
.	O
</s>
<s>
The	O
intended	O
successor	O
to	O
SDA	O
is	O
SFX	O
..	O
seaSelf	O
Extracting	O
ArchiveClassic	O
Mac	B-Device
OSClassic	O
Mac	B-Application
OS	I-Application
(	O
implicitly	O
)	O
A	O
pre-Mac	O
OS	O
X	O
Self-Extracting	O
Archive	B-Application
format	O
.	O
</s>
<s>
StuffIt	B-Application
,	O
Compact	B-Operating_System
Pro	I-Operating_System
,	O
Disk	O
Doubler	O
and	O
others	O
could	O
create	O
.sea	O
files	O
,	O
though	O
the	O
StuffIt	B-Application
versions	O
were	O
the	O
most	O
common	O
..	O
senSciferMultipleMultipleScifer	O
Archive	B-Application
with	O
internal	O
header.sfxSelf	O
Extracting	O
ArchiveCommodore	O
64	O
,	O
Commodore	O
128Commodore	O
64	O
,	O
Commodore	O
128SFX	O
is	O
a	O
Self	O
Extracting	O
Archive	B-Application
which	O
uses	O
the	O
LHArc	B-Application
compression	B-General_Concept
algorithm	I-General_Concept
.	O
</s>
<s>
It	O
was	O
originally	O
developed	O
by	O
Chris	O
Smeets	O
on	O
the	O
Commodore	O
platform	O
,	O
and	O
runs	O
primarily	O
using	O
the	O
CS-DOS	O
extension	B-Application
for	O
the	O
Commodore	O
128	O
.	O
</s>
<s>
Unlike	O
its	O
predecessor	O
SDA	O
,	O
SFX	O
files	O
will	O
run	O
on	O
both	O
the	O
Commodore	O
64	O
and	O
Commodore	O
128	O
regardless	O
of	O
which	O
machine	O
they	O
were	O
created	O
on	O
..	O
shkNuFXOriginally	O
Apple	O
II	O
,	O
now	O
multipleMultipleAn	O
archive	B-Application
format	O
designed	O
for	O
the	O
Apple	O
II	O
series	O
of	O
computers	O
.	O
</s>
<s>
The	O
canonical	O
implementation	O
is	O
ShrinkIt	B-General_Concept
,	O
which	O
can	O
operate	O
on	O
disk	O
images	O
as	O
well	O
as	O
files	O
.	O
</s>
<s>
Preferred	O
compression	B-General_Concept
algorithm	I-General_Concept
is	O
a	O
combination	O
of	O
RLE	O
and	O
12-bit	O
LZW	B-Algorithm
.	O
</s>
<s>
Archives	O
can	O
be	O
manipulated	O
with	O
the	O
command-line	O
NuLib	O
tool	O
,	O
or	O
the	O
Windows-based	O
CiderPress	O
..	O
sitapplication	O
-stuffitStuffItOriginally	O
Classic	B-Application
Mac	I-Application
OS	I-Application
,	O
now	O
multipleOriginally	O
Classic	B-Application
Mac	I-Application
OS	I-Application
,	O
now	O
multipleA	O
compression	O
format	O
common	O
on	O
Apple	B-Device
Macintosh	I-Device
computers	I-Device
.	O
</s>
<s>
The	O
free	O
StuffIt	B-Application
Expander	O
is	O
available	O
for	O
Windows	B-Application
and	O
macOS	B-Application
..	O
sitxapplication	O
-stuffitxStuffIt	O
XMultipleMultipleThe	O
replacement	O
for	O
the	O
.sit	B-Application
format	O
that	O
supports	O
more	O
compression	O
methods	O
,	O
UNIX	B-Application
file	O
permissions	O
,	O
long	O
file	O
names	O
,	O
very	O
large	O
files	O
,	O
more	O
encryption	O
options	O
,	O
data	O
specific	O
compressors	O
(	O
JPEG	O
,	O
Zip	B-General_Concept
,	O
PDF	O
,	O
24-bit	O
image	O
,	O
MP3	O
)	O
.	O
</s>
<s>
The	O
free	O
StuffIt	B-Application
Expander	O
is	O
available	O
for	O
Windows	B-Application
and	O
OS	B-Operating_System
X	I-Operating_System
..	O
sqxSQXWindowsWindowsA	O
royalty-free	O
compressing	O
format.tar.gz	O
,	O
.tgz	B-Application
,	O
.tar.Z	O
,	O
.tar.bz2	O
,.	O
tbz2	O
,	O
.tar.lz	O
,	O
.tlz	O
,	O
.tar.xz	O
,	O
.txz	O
,	O
.tar.zstapplication/x	O
-gtartar	O
with	O
gzip	B-Application
,	O
compress	B-General_Concept
,	O
bzip2	B-Application
,	O
lzip	B-Application
,	O
xz	B-Language
,	O
or	O
zstdMultipleMultipleThe	O
"	O
tarball	B-Application
"	O
format	O
combines	O
tar	B-Application
archives	I-Application
with	O
a	O
file-based	O
compression	O
scheme	O
(	O
usually	O
gzip	B-Application
)	O
.	O
</s>
<s>
Commonly	O
used	O
for	O
source	O
and	O
binary	O
distribution	O
on	O
Unix-like	B-Operating_System
platforms	O
,	O
widely	O
available	O
elsewhere	O
.	O
</s>
<s>
Xarchiver	B-Language
supports	O
the	O
.tar.zst	O
Archive/Compression	O
format	O
on	O
Unix-like	B-Operating_System
platforms	O
..	O
uc	O
.uc0	O
.uc2	O
.ucn	O
.ur2	O
.ue2UltraCompressor	O
IIDOSDOSUltraCompressor	O
2.3	O
was	O
developed	O
to	O
act	O
as	O
an	O
alternative	O
to	O
the	O
then	O
popular	O
PKZIP	B-Application
application	O
.	O
</s>
<s>
This	O
means	O
that	O
compressed	B-Application
archives	I-Application
with	O
the	O
UC2	O
file	O
extension	B-Application
can	O
hold	O
almost	O
1	O
million	O
files	O
.	O
</s>
<s>
.ucaPerfectCompressWindowsWindowsBased	O
on	O
PAQ	B-Application
,	O
RZM	O
,	O
CSC	O
,	O
CCM	O
,	O
and	O
7zip	B-Language
.	O
</s>
<s>
The	O
format	O
consists	O
of	O
a	O
PAQ	B-Application
,	O
RZM	O
,	O
CSC	O
,	O
or	O
CCM	O
compressed	O
file	O
and	O
a	O
manifest	O
with	O
compression	O
settings	O
stored	O
in	O
a	O
7z	O
archive	B-Application
..	O
uhaUHarcDOS	O
A	O
high	O
compression	O
rate	O
archive	B-Application
format	O
originally	O
for	O
DOS	B-Device
..	O
warWARMultipleMultipleWeb	O
Application	O
archive	B-Application
(	O
Java-based	O
web	O
app	O
)	O
.wimapplication/x	O
-ms-wimWindows	O
ImageWindowsWindowsFile-based	O
disk	O
image	O
format	O
developed	O
to	O
deploy	O
Microsoft	B-Application
Windows	I-Application
..	O
xarapplication	O
-xarXARMultipleMultiple.xp3KiriKiriWindowsWindowsNative	O
format	O
of	O
the	O
Open	O
Source	O
KiriKiri	O
Visual	O
Novel	O
engine	O
.	O
</s>
<s>
Uses	O
combination	O
of	O
block	O
splitting	O
and	O
zlib	B-Language
compression	O
.	O
</s>
<s>
For	O
integrity	O
check	O
,	O
the	O
Adler-32	B-Algorithm
hashsum	O
is	O
used	O
.	O
</s>
<s>
For	O
many	O
commercial	O
games	O
,	O
the	O
files	O
are	O
encrypted	O
(	O
and	O
decoded	O
on	O
runtime	O
)	O
via	O
so-called	O
"	O
cxdec	O
"	O
module	O
,	O
which	O
implements	O
xor-based	O
encryption	O
..	O
yz1YZ1Windows	O
,	O
DOS	B-Device
,	O
LinuxWindows	O
,	O
DOS	B-Device
,	O
LinuxYamazaki	O
zipper	O
archive	B-Application
.	O
</s>
<s>
Compression	O
format	O
used	O
in	O
DeepFreezer	O
archiver	B-Application
utility	I-Application
created	O
by	O
Yamazaki	O
Satoshi	O
.	O
</s>
<s>
Read	O
and	O
write	O
support	O
exists	O
in	O
TUGZip	B-Application
,	O
IZArc	O
and	O
ZipZag.zip	O
,	O
.zipxapplication/zipZIPOriginally	O
DOS	B-Device
,	O
now	O
multipleMultipleThe	O
most	O
widely	O
used	O
compression	O
format	O
on	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
Commonly	O
used	O
on	O
Macintosh	B-Device
and	O
Unix	B-Application
systems	I-Application
as	O
well	O
..	O
zooapplication	O
-zoozooMultipleMultiple.zpaqZPAQMultipleMultipleJournaling	O
(	O
append-only	O
)	O
archive	B-Application
format	O
with	O
rollback	O
capability	O
.	O
</s>
<s>
Supports	O
deduplication	B-General_Concept
and	O
incremental	O
update	O
based	O
on	O
last-modified	O
dates	O
.	O
</s>
<s>
Compresses	O
in	O
LZ77	O
,	O
BWT	B-Algorithm
,	O
and	O
context	B-General_Concept
mixing	I-General_Concept
formats	O
.	O
</s>
<s>
Open	O
source	O
..	O
zzZzipMultipleMultipleArchiver	O
with	O
a	O
compression	B-General_Concept
algorithm	I-General_Concept
based	O
on	O
the	O
Burrows	B-Algorithm
–	I-Algorithm
Wheeler	I-Algorithm
transform	I-Algorithm
method	O
.	O
</s>
<s>
File	O
extension(s )	O
MIME	B-Protocol
typeOfficial	O
namePlatformDescription.eccdvdisaster	O
error-correction	O
fileMultipleFile	O
format	O
used	O
by	O
dvdisaster	B-Language
to	O
be	O
used	O
for	O
data	O
recovery	O
when	O
discs	O
become	O
damaged	O
or	O
partially	O
unreadable	O
..	O
ecsbxError	O
SeqBoxMultipleArchive	O
with	O
forward	O
error	B-Error_Name
correction	I-Error_Name
and	O
sector	O
level	O
recoverability	O
.	O
</s>
<s>
Error-correcting	O
version	O
of	O
SeqBox	O
..	O
par	O
-par2Parchive	O
fileMultipleFile	O
format	O
used	O
in	O
conjunction	O
with	O
any	O
archive	B-Application
format	O
to	O
provide	O
error	B-Error_Name
correction	I-Error_Name
and	O
file	O
recovery	O
,	O
most	O
often	O
in	O
newsgroup	B-Application
distribution	O
of	O
binary	O
files	O
..	O
revWinRAR	O
recovery	O
volumeMultipleFile	O
format	O
used	O
with	O
WinRAR	B-Application
rar	O
volumes	O
.	O
</s>
<s>
Format	O
Filename	O
extension	B-Application
Created	O
by	O
Introduced	O
in	O
Based	O
on	O
Compression	O
Integrity	O
check	O
Recovery	O
record	O
Encryption	O
supported	O
Unicode	O
filenames	O
Modification	O
date	O
resolution	O
Pre-processing	O
License	O
Archive	B-Application
(	O
ar	B-Application
)	O
.a	B-Library
,	O
.ar	O
CSRG	B-Operating_System
1971	O
Original	O
1	O
s	O
cpio	B-Application
.cpio	B-Application
Bell	O
Labs	O
1983	O
Unix	B-Operating_System
System	I-Operating_System
V	I-Operating_System
,	O
select	O
formats	O
only	O
1	O
s	O
Shell	B-General_Concept
Archive	I-General_Concept
(	O
shar	B-General_Concept
and	O
makeself	O
)	O
.shar	B-General_Concept
,	O
.run	O
James	O
Gosling	O
,	O
Alan	O
Hewett	O
1994	O
4.4BSD	O
Original	O
,	O
commonly	O
MD5	O
arbitrary	O
(	O
typically	O
1	O
s	O
)	O
Tape	B-Application
Archive	I-Application
(	O
tar	B-Application
)	O
.tar	B-Application
Bell	O
Labs	O
1975	O
Version	B-Operating_System
6	I-Operating_System
Unix	I-Operating_System
,	O
metadata	O
only	O
.	O
</s>
<s>
Full	O
integrity	O
providable	O
by	O
filters	O
such	O
as	O
gzip	B-Application
.	O
</s>
<s>
1	O
s	O
Extended	O
TAR	B-Application
format	O
(	O
pax	B-Device
)	O
.tar	B-Application
OpenGroup	B-Application
2001	O
Sun	O
proposal	O
+	O
TAR	B-Application
metadata	O
arbitrary	O
(	O
typically	O
1	O
ns	O
)	O
BagIt	O
–	O
The	O
Library	O
of	O
Congress	O
2007	O
file	O
system	O
7z	O
.7z	O
Igor	B-Language
Pavlov	I-Language
2000	O
LZMA	B-General_Concept
,	O
LZMA2	B-General_Concept
,	O
Bzip2	B-Application
,	O
PPMd	B-Algorithm
,	O
Deflate	B-Algorithm
,	O
CRC32	O
,	O
AES-256	O
100	O
ns	O
ACE	B-General_Concept
.ace	O
Marcel	O
Lemke	O
1998http://www.hugi.scene.org/online/coding/hugi	O
%2012%	O
20-	O
%	O
20coace.htm	O
LZ77	O
,	O
Blowfish	O
2s	O
AFA	O
.afa	O
Vicente	O
Sánchez-Alarcos	O
2009	O
Original	O
,	O
AES	O
and	O
CAST	O
ARC	B-Application
.arc	B-Application
Thom	B-Application
Henderson	I-Application
(	O
SEA	O
)	O
1985	O
2s	O
ARJ	B-Application
.arj	B-Application
Robert	O
Jung	O
1991	O
AR001	O
and	O
AR002	O
B1	B-General_Concept
.b1	O
Catalina	O
Group	O
Ltd	O
2011	O
LZMA	B-General_Concept
,	O
AES	O
Cabinet	O
.cab	O
Microsoft	O
1992	O
Windows	B-Application
3.1	I-Application
Deflate	B-Algorithm
PKCS7	O
Authenticode	O
signature	O
(	O
with	O
SDK	O
)	O
2	O
s	O
Compact	B-General_Concept
File	I-General_Concept
Set	I-General_Concept
.cfs	O
Joe	O
Lowe	O
(	O
Pismo	O
Technic	O
Inc	O
.	O
)	O
2008	O
ZIP/LZMA	O
Compact	B-Operating_System
Pro	I-Operating_System
.cpt	O
Bill	O
Goodman	O
1990	O
(	O
as	O
"	O
Compactor	O
"	O
)	O
Original	O
Disk	B-Application
Archive	I-Application
(	O
DAR	B-Application
)	O
.dar	O
Denis	O
Corbin	O
2002	O
Original	O
1	O
µs	O
DGCA	B-Application
.dgc	O
Shin-ichi	O
Tsuruta	O
2001	O
GCA	O
FreeArc	B-Application
.arc	B-Application
Bulat	O
Ziganshin	O
2006	O
LZMA	B-General_Concept
,	O
PPMd	B-Algorithm
,	O
TTA	B-Algorithm
,	O
AES	O
,	O
Blowfish	O
,	O
Twofish	O
and	O
Serpent	O
LHA	B-Application
(	O
also	O
LZH	O
)	O
.lzh	B-Application
,	O
.lha	B-Application
Haruyasu	O
Yoshizaki	O
1988	O
Frozen	O
Only	O
on	O
recent	O
LHA	B-Application
releases	O
1	O
–	O
2	O
s	O
LZX	B-Device
.lzx	O
Jonathan	O
Forbes	O
and	O
Tomi	O
Poutanen	O
1995	O
LZ77	O
Only	O
on	O
recent	O
LZX	B-Device
releases	O
ISO	B-General_Concept
image	I-General_Concept
.iso	B-General_Concept
,	O
.img	O
,	O
.ima	O
ISO	B-Application
9660	I-Application
1988	O
High	B-Application
Sierra	I-Application
Format	I-Application
Spark	O
.arc	B-Application
David	O
Pilling	O
1989	O
ARC	B-Application
1	O
cs	O
WinMount	O
format	O
.mou	O
?	O
</s>
<s>
Macintosh	B-Operating_System
Disk	I-Operating_System
Image	I-Operating_System
.dmg	B-Operating_System
Apple	O
Computer	O
2001	O
Mac	B-Application
OS	I-Application
X	I-Application
Original	O
Partition	B-Application
Image	I-Application
(	O
PartImage	B-Application
)	O
.partimg	O
François	O
Dupoux	O
and	O
Franck	O
Ladurelle	O
2000	O
PAQ	B-Application
Family	O
(	O
Several	O
formats	O
)	O
.paq	O
#*	O
,	O
.lpaq	O
#*	O
Matt	O
Mahoney	O
2002	O
–	O
2006	O
Original	O
PEA	O
.pea	O
Giorgio	O
Tani	O
2006	O
Original	O
,	O
Deflate	B-Algorithm
based	O
compression	O
Adler32	B-Algorithm
,	O
CRC32	O
,	O
CRC64	O
,	O
MD5	O
,	O
SHA1	O
,	O
RIPEMD-160	O
,	O
SHA256	B-Algorithm
,	O
SHA512	B-Algorithm
,	O
Whirlpool	B-Algorithm
Authenticated	O
Encryption	O
,	O
AES128	O
and	O
AES256	O
in	O
EAX	O
mode	O
system	O
dependent	O
arbitrary	O
PIM	O
.pim	O
Ilia	O
Muraviev	O
2004	O
–	O
2008	O
Original	O
Quadruple	O
D	O
.qda	O
Taku	O
Hayase	O
(	O
aka	O
sandman	O
)	O
1997	O
RAR	O
.rar	O
Eugene	O
Roshal	O
1993	O
Original	O
,	O
CRC32	O
,	O
BLAKE2	B-Algorithm
,	O
Reed	B-Error_Name
–	I-Error_Name
Solomon	I-Error_Name
,	O
AES-256	O
for	O
RAR	O
5.0	O
archives	O
,	O
UTF-8	O
2	O
s	O
,	O
1	O
s	O
,	O
6.5536	O
ms	O
,	O
25.6	O
µs	O
or	O
100	O
ns	O
RK	O
.rk	O
M	O
Software	O
,	O
Ltd	O
.	O
2004	O
Original	O
,	O
AES	O
,	O
Square	O
,	O
Twofish	O
1	O
s	O
NuFX	B-General_Concept
.shk	O
Andy	O
Nicholas	O
1989	O
Original	O
1	O
s	O
StuffIt	B-Application
(	O
also	O
SIT	O
)	O
.sit	B-Application
Raymond	B-Application
Lau	I-Application
1987	O
StuffIt	B-Application
X	I-Application
(	O
also	O
SITx	B-Application
)	O
.sitx	B-Application
Aladdin/Allume	O
Systems	O
2002	O
,	O
RC4	O
,	O
Blowfish	O
,	O
AES	O
,	O
DES	O
UltraCompressor	O
II	O
.uc	O
.uc0	O
.uc2	O
.ucn	O
.ur2	O
.ue2	O
Nico	O
de	O
Vries	O
1992	O
–	O
1996	O
LZ77	O
and	O
Huffman	B-General_Concept
coding	I-General_Concept
,	O
triple	O
DES	O
?	O
</s>
