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1995-01-30
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[This text is from the comp.compression FAQ List]
[Edited and reproduced with permission from Jean-loup Gailly]
[Edited to be specific to IBM PC systems, and for brevity]
Last-modified: Jan 18th, 1995
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Subject: [2] What is this .xxx file type?
Where can I find the corresponding compression program?
All the programs mentioned in this section are lossless.
For most programs, one US and one European ftp site are given.
(oak.oakland.edu: 141.210.10.117, garbo.uwasa.fi: 128.214.87.1)
Many other sites (in particular wuarchive.wustl.edu: 128.152.135.4)
have the same programs.
To keep this list to a reasonable size, many programs are not
mentioned here. Additional information can be found in the file
ftp.cso.uiuc.edu:/doc/pcnet/compression [128.174.5.61] maintained by
David Lemson (lemson@uiuc.edu). When several programs can handle
the same archive format, only one of them is given.
Sources for additional lossless data compressors can be found in
garbo.uwasa.fi:/pc/programming/lds_11.zip and
oak.oakland.edu:/pub/msdos/archivers/lz-comp2.zip.
See also turing.imag.fr:/pub/compression/codecs.dir.tar.gz
for sources of RLE, Huffman and LZW.
Sources in Pascal are in garbo.uwasa.fi:/pc/turbopas/preskit2.zip.
Splay tree compression code is available on ftp.cs.uiowa.edu in
directory /pub/jones/compress.
If you can't find a program given below, it is likely that a newer
version exists in the same directory. (Tell me <jloup@chorus.fr>)
A very short description of the compression algorithm is given for
most programs.
ext: produced by or read by
.arc, .ark: arc, pkarc for MSDOS. (LZW algorithm)
wuarchive.wustl.edu:/mirrors/msdos/starter/pk361.exe
garbo.uwasa.fi:/pc/arcers/pk361.exe
.arj: arj for MSDOS (LZ77 with hashing, plus secondary static Huffman
encoding on a block basis)
Contact: Robert K Jung <robjung@world.std.com>
wuarchive.wustl.edu:/mirrors/msdos/archivers/arj241a.exe
garbo.uwasa.fi:/pc/arcers/arj241a.exe
.hap: Hamarsoft HAP 3.00 archiver. Contact: harald.feldmann@almac.co.uk
garbo.uwasa.fi:/pc/arcers/hap300re.zip
.lzh: lha for MSDOS (LZ77 with a trie data structure, plus secondary static
Huffman coding on a block basis)
oak.oakland.edu:/pub/msdos/archiver/lha213.exe (exe)
oak.oakland.edu:/pub/msdos/archiver/lha211sr.zip (sources)
garbo.uwasa.fi:/pc/arcers/lha255b.exe
.pak: pak for MSDOS (LZW algorithm)
wuarchive.wustl.edu:/mirrors/msdos/archivers/pak251.exe
garbo.uwasa.fi:/pc/arcers/pak251.exe
.rar: RAR (MSDOS) Contact: Eugene_Roshal@p0.f23.n5010.z2.fidonet.org
oak.oakland.edu:/SimTel/msdos/archiver/rar1_52.exe
garbo.uwasa.fi:/pc/arcers/rar1_53.exe
ftp.kiae.su:/msdos/arcers/rar*.exe
.sqz: Squeeze for MSDOS (do not confuse with other 'squeeze' above)
LZ77 with hashing.
wuarchive.wustl.edu:/mirrors/msdos/archivers/sqz1083e.exe
garbo.uwasa.fi:/pc/arcers/sqz1083e.exe
.uc2: UC2 for MSDOS and OS/2. (LZ77 with secondary static Huffman encoding on
a block basis, and dynamic dictionaries shared among files.)
Contact: desk@aip.nl
garbo.uwasa.fi:/pc/arcers/uc2r2.exe
.zip: pkzip 1.10 for MSDOS. (LZ77 with hashing, plus secondary static
Shannon-Fano encoding on whole file). Contact: support@pkware.com
wuarchive.wustl.edu:/mirrors/msdos/zip/pkz110eu.exe.
garbo.uwasa.fi:/pc/goldies/pkz110eu.exe.
Note: pkz110eu.exe is an 'export' version without encryption.
pkzip 2.04g for MSDOS. (LZ77 with hashing, plus secondary static
Huffman coding on a block basis). Contact: support@pkware.com
oak.oakland.edu:/pub/msdos/zip/pkz204g.exe
garbo.uwasa.fi:/pc/arcers/pkz204g.exe
.zoo: zoo 2.10 for MSDOS (algorithm copied from that of lha, see lha above)
Contact: Rahul Dhesi <dhesi@cirrus.com>
wuarchive.wustl.edu:/mirrors/msdos/zoo/zoo210.exe
garbo.uwasa.fi:/pc/arcers/zoo210.exe
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