en>ChrisGualtieri: /* See also */Remove stub template(s). Page is start class or higher. Also check for and do General Fixes + Checkwiki fixes using AWB

2013-12-20T15:20:31Z

See also: Remove stub template(s). Page is start class or higher. Also check for and do General Fixes + Checkwiki fixes using AWB

New page

{{Infobox software
| name = freearc
| screenshot =
| caption =
| developer = Bulat Ziganshin
| latest_release_version = 0.666
| latest_release_date = {{start date and age|2010|05|20}}
| programming language = [[Haskell (programming language)|Haskell]], [[C++]], [[C (programming language)|C]]
| operating_system = [[Microsoft Windows]], [[GNU/Linux]]
| platform = [[IA-32]]
| genre = [[File archiver]]
| license = [[GNU General Public License#Version 3|GNU GPLv2]]+<ref name="freearc-license">{{cite web|url=http://sourceforge.net/projects/freearc/develop|title=FreeArc : Develop|accessdate=2009-08-17|quote=license: GPL}}</ref>
| website = [http://freearc.org/ freearc.org]
}}

'''FreeArc''' is a [[free software|free]] and [[open-source software|open source]] [[file archiver]] developed by Bulat Ziganshin.

==Algorithms==
FreeArc uses [[LZMA]], [[PPMD]], [[TTA (codec)|TrueAudio]], Tornado and [[GRzip]] algorithms with automatic switching by file type, and also uses set of filters—for instance it can remove repetitions from text.<ref name=tomshardware/>

==Benchmarks==
===Archive size===
In [[Tom's Hardware]] benchmarks comparing it to the other popular archivers [[WinZip]], [[7-Zip]], and [[WinRAR]], FreeArc narrowly outperformed them by small margin in its "best compression" mode, but lost to 7-Zip's [[LZMA2]] in the "default compression" tests, still compressing better than WinRAR and WinZip at this setting.<ref name=tom2>http://www.tomshardware.com/reviews/archive-zip-compression,2572-6.html</ref>

===Speed===
In the same Tom's Hardware tests, FreeArc was outpaced at default settings by 7zip's LZMA2 default compression, and also by WinRAR, even at its best compression settings. FreeArc's compression at its best settings was slower than both 7zip and WinRAR, but still came ahead of WinZip.<ref name=tom2/>

===Efficiency===
In a metric devised by Werner Bergmans of [[Maximum Compression Benchmark]], FreeArc compression is more efficient than programs for classic formats like [[Compress|.Z]] ([[Lempel-Ziv-Welch|LZW]]), [[ZIP (file format)|.zip]] ([[DEFLATE|Deflate]]), [[gzip|.gz]] or [[bzip2]]. (The scoring formula used in this non-public test,
: <math>\text{score}_X = \text{time}_X \times 2^{10(\frac{\text{size}_X}{\text{size}_{\text{TOP}}} - 1)}</math>
multiplies the sum of compression and decompression times with a factor that exponentially grades the ratio of archive sizes achieved by the program under test relative to the best known archive size for that data set.) As of November 2010, FreeArc is the top program in this benchmark, followed by [[NanoZip]], [[block-sorting compressor|bsc]] and [[WinRAR]].<ref name="compressioncomparison">{{cite web|url=http://compressionratings.com/comp.cgi?freearc+0.60+-mex1+freearc+0.60+-mex3+pigz+2.1.4+-5+pbzip2+1.0.5+|title=FreeArc vs zip vs bzip2|accessdate=2009-09-30}}</ref> It works faster than WinRAR and 7zip.<ref name="golem">{{de icon}}{{cite web|url=http://www.golem.de/0912/72026.html|title=FreeArc - Kompressionsprogramm mit eigenem Format}}, golem.de</ref>

==Features==
{{Infobox file format
| name = freearc
| extension = <tt>.arc</tt>
| mime = <tt>application/x-freearc</tt>
| owner = Bulat Ziganshin
| genre = [[Data compression]]
}}
Like [[RAR]] and [[ZIP (file format)|ZIP]] it is an archiver. It is not just a data compressor like [[gzip]] or [[bzip2]]. Initially it supported only its own archive format, normally identified by the <code>.arc</code> file name extension, incompatible with others;<ref name=tomshardware/> there's no relationship with other [[.arc]] formats. More recently, decompression support for other archive types has been added as well, including zip, rar, and [[7z]]. FreeArc has both a command line interface and a [[GUI]].<ref name=golem/> Other features include:

*Solid compression with "smart updates" which avoid recompression when possible
*AES/Blowfish/Twofish/Serpent encryption,<ref name="tomshardware">Patrick Schmid, Achim Roos, (March 10, 2010) ''[http://www.tomshardware.com/reviews/archive-zip-compression,2572-3.html 7-Zip 9.1 Beta And FreeArc 0.60]'', [[Tom's Hardware]]</ref> including chaining of encryption algorithms
*FAR and Total Commander plugins
*Ability to create [[self-extracting archive]]s and installers
*Archive protection{{Clarify|date=May 2010}} and recovery, including recovery over Internet{{Clarify|date=May 2010}}

==Supported platforms==
Windows and [[x86]] Linux [[binary file|binaries]] are available from the developer. There was no [[64-bit]] version as of January 2012, but may change as the program had not left its alpha stage of development yet.<ref>{{cite web|title=FreeArc Download page|url=http://freearc.org/Download-Alpha.aspx|accessdate=7 January 2012}}</ref>

==See also==
{{Portal|Free software}}

* [[List of archive formats]]
* [[List of file archivers]]
* [[Comparison of file archivers]]
* [[List of Unix programs]]
* [[rzip]]
* [[lzma]]

==References==
{{Reflist}}

==External links==
* [http://freearc.org/ The FreeArc home page]
* [http://sourceforge.net/projects/freearc/develop FreeArc project at SourceForge] (abandoned)

{{Archive formats}}
{{Compression Software Implementations}}
{{FLOSS}}

{{DEFAULTSORT:Freearc}}
[[Category:Lossless compression algorithms]]
[[Category:Free data compression software]]
[[Category:Archive formats]]
[[Category:Unix archivers and compression-related utilities]]
[[Category:Cross-platform software]]
[[Category:Year of introduction missing]]
[[Category:File archivers]]

Difference algebra - Revision history

en>ChrisGualtieri: /* See also */Remove stub template(s). Page is start class or higher. Also check for and do General Fixes + Checkwiki fixes using AWB