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PeaZip is a free cross-platform file archiver that provides an unified portable GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX...
Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP files
Open and extract over 180 archive types: ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more...
Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives, split/join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export job definition as script.

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FAQ / COMMON ARCHIVE FORMATS > ARC FILE FORMAT
open source rar

ARC file format (FreeArc's archives)



WHAT IS ARC FILE FORMAT

What is ARC file extension



ARC extension designates the native archive format developed for  FreeArcwhat is .arc file, a modern open source file archiver created by Bulat Ziganshin, providing high level of compression (11 lossless data compression algorithms and filtes are supported, including LZMA and PPMD) with good efficiency (Tom's Hardware comparativearc vs rar vs 7z benchmark), strong encryption (AES, Blowfish, and AES contest finalist algorithms Twofish, and Serpent), and ability to create recovery records. The file format is also known with WRC extension.

This format must not be confused with 1985 SEA's ARC format.arc file definition, using same .arc file extension. The company pionereed the data compression in BBS era, but ARC program fell in popularity after the introduction of more efficient Phil Katz's PKARC, which later developed largely modified and improved ZIP format for PKZIP program, in response to the notorious lawsuit ensued between SEA and PKWARE.

PeaZip supports creation and extraction of ARC files: create, open, browse, and extract ARC archives, convert any supported archive to .arc format and vice-versa. Also, the application supports creation of arc-format self extracting archives (SFX), so recipient will not need a FreeArc compatible extractor when receiving one of those self-extracting files.
PeaZip currently does not support reading, nor writing, the unrelated SEA's ARC format.

Read more on FreeArc Wikipedia entryFreeArc software, PPMdWikipedia prediction by partial matching and LZMA/LZMA2Lempel Ziv Markov chain algorithm data compression algorithms, AESwikipedia aes algorithm, Twofishtwofish algorithm, SerpentSerpent algorithm ciphers.

  



  

.ARC

Author Bulat Ziganshin, 2007

SPEED what is arc file type

Good, very efficient implementation makes it significantly faster than 7Z compression and extraction (and marginally faster than RAR), with comparable compression ratio.







COMPRESSION RATIO arc format

Very good. Comparable to 7-Zip with LZMA / LZMA2 compression, consistently better than RAR format, but inferior to PAQ compressors family.

ADVANCED OPTIONS arc file specs
Very good. Built-in support for AES, Twofish and Serpent encryption, and optional creation of recovery records - ARC is one of the few file types alongside RAR providing error recovery feature.








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CREATE SELF-EXTRACTING SFX FILE

MANAGE ARC FILES
Tag Cloud
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