PeaZip

PeaZip

PeaZip running on Windows 7
Developer(s)	Giorgio Tani
Initial release	September 16, 2006 (September 16, 2006)[1]
Stable release	4.2[2] / November 20, 2011; 0 days ago (2011-11-20)
Development status	Active
Written in	Free Pascal (highly compatible with Delphi and Object Pascal languages)[3]
Operating system	Microsoft Windows GNU/Linux Mac OS (Under Development)[4] BSD (compiled by PC-BSD community)[5],
Platform	x86-32, x86-64
Size	Windows 4.7 MB - EXE Linux GTK2 8.9 MB - DEB 8.5 MB - RPM 9.0 MB - TGZ Linux QT 9.0 MB - DEB 8.6 MB - RPM 9.0 MB - TGZ
Available in	Chinese Traditional - 繁體中文 Chinese - 简体中文 Česky English German - Deutsch English (United Kingdom) English Spanish - Español Français Galician - Galego Hungarian - Magyar Italian - Italiano Japanese - 日本語 Korean - 한국어 Dutch - Nederlands Norwegian - Norsk Polish - Polski Portuguese (Brazil) - Português Portuguese (Portugal) Russian - русский Sinhala - සිංහල Swedish - Svenska Turkish - Türkçe Ukrainian - Українська Vietnamese - Việt
Type	File Archiver, File Compressor, File Manager, File Splitter, File Encryption, Secure file deletion
License	GNU Lesser General Public License
Website	peazip.org

PeaZip is a file manager and file archiver for Microsoft Windows and GNU/Linux.^[6] It supports its native PEA archive format (featuring compression, multi volume split and flexible authenticated encryption and integrity check schemes) and other mainstream formats, with special focus on handling open formats.^[7][8] It supports 134 file extensions (Version 4.2).^[9]

PeaZip is mainly written in Free Pascal, using Lazarus. PeaZip is released under the terms of the GNU Lesser General Public License.

Features

The program features an archive browser interface with search and history features for intuitive navigation in archive's content, and allows the application of fine-grained multiple exclusion and inclusion filter rules to the archive; a flat browsing mode is possible as alternative archive browsing method.

PeaZip allows users to run extracting and archiving operations automatically using command-line generated exporting the job defined in the GUI front-end. It can also create, edit and restore an archive's layout for speeding up archiving or backup operation's definition.

Other notable features of the program includes archive conversion, file splitting and joining, secure file deletion, byte-to-byte file comparison, archive encryption, checksum/hash files, find duplicate files, system benchmarking, random passwords/keyfiles generation, view image thumbnails (multi threaded on the fly thumbnails generation without saving image cache to the host machine), and integration in the Windows Explorer context menu. In addition, the program's user interface (including icons and color scheme) can be customized.^[10][11][12]

PeaZip is available for x86 and x86-64 as installable package for Windows and Linux (DEB, RPM and TGZ, compiled both for GTK2 and Qt widgetset), and as natively standalone, portable application for both Windows and Linux. In the latter form it is available also as PortableApps package (.paf.exe).^[13]

Along with more popular and general-purpose archive formats like 7z, Tar, ZIP etc., PeaZip supports the PAQ and LPAQ formats. Although usually not recommended for general purpose use (due to high memory usage and low speed), those formats are included for the value as cutting edge compression technology, providing compression ratio amongst the best for most data structures.^[14][15]

PeaZip supports encryption with AES 256-bit cipher in 7z, ZIP and PEA archive formats. In FreeArc's ARC format, supported ciphers are AES 256-bit, Blowfish, Twofish 256 and Serpent 256.^[16]

Limitations

The graphical frontend's progress bar is less reliable than the native console's progress indicator for the various backend utilities. If it is critical to follow the real time progress of the work it is possible to set the program to use the native console interface, or both graphical and console interfaces, for the backend utilities.

Native archive format

PEA, an abbreviation for Pack Encrypt Authenticate, is an archive file format. It is a general purpose archiving format featuring compression and multiple volume output. The developers' goal is to offer a flexible security model through Authenticated Encryption, that provides both privacy and authentication of the data, and redundant integrity checks ranging from checksums to cryptographically strong hashes, defining three different levels of communication to control: streams, objects, and volumes.^{[17][verification needed]}

It was developed in conjunction with the PeaZip file archiver. PeaZip and Universal Extractor support the PEA archive format.

Third-party technologies

PeaZip acts as a graphical front-end for numerous third-party open source or royalty-free utilities, including:

• Igor Pavlov's 7z executable and Myspace's POSIX port of 7z under Linux
• Bulat Ziganshin's FreeArc archiver (to not be confused with SEA's ARC)
• PAQ8, ZPAQ and LPAQ executables, maintained by Matt Mahoney and various contributors
• Ilia Muraviev's QUAD and BALZ compressors
• GNU strip and UPX
• UNACEV2.DLL 2.6.0.0 (royalty-free UNACEV2.DLL license) and UNACE for Linux (royalty-free UNACE for Linux license) (maintained by Marcel Lemke, ACE Compression Software)

Most of these utilities can run both in console mode or through a graphical wrapper that allows more user-friendly handling of output information.

Supported formats

Full archiving and extraction support

• 7z^[18]
• 7z-SFX
• FreeArc's ARC/WRC^[19]
• bzip2: bz2, tar.bz2, tbz, tb2
• gzip: gz, tar.gz, tgz
• PAQ8F/JD/L/O,^[20] LPAQ, ZPAQ
• PEA
• QUAD/BALZ
• split (.001)
• tar
• WIM
• XZ
• ZIP

Browse/test/extract support

• ACE
• ARJ
• CAB
• CHM
• Compound File (MSI, DOC, PPT, XLS, etc.)
• CPIO
• DEB
• EAR
• ISO CD/DVD images
• JAR
• LZMA
• LZH
• NSIS installers
• OpenOffice's OpenDocument file types
• PET/PUP (Puppy Linux installers)
• PAK/PK3/PK4
• RAR
• RPM
• SMZIP
• U3P
• WAR
• WIM
• XPI
• Z (compress)
• ZIPX

Repair

• FreeArc's ARC

Software advertising

As of 3.7, PeaZip installer for Windows is available either as a version showing advertising during installation process (in partnership with OpenCandy, which is part of Google Ventures), and alternatively as a plain installer version with no third party bundle. PeaZip Portable and PeaZip for Linux packages do not feature any third party bundle, and alongside PeaZip plain installer are suitable for environments requiring exclusively software released under OSI approved licenses.

See also

Free software portal

• Comparison of file archivers
• List of archive formats
• Comparison of archive formats
• List of portable software

References

1. ^ "PeaZip - Changelog". 2011-03-15. http://peazip.org/peazip0-changelog.txt. Retrieved 2011-03-15. 
2. ^ "PeaZip - Changelog". 2011-11-20. http://www.peazip.org/changelog.html. Retrieved 2011-11-20. 
3. ^ "See for Notes for developers". 2011-03-15. http://peazip.org/peazip-free-archiver.html. Retrieved 2011-03-15. 
4. ^ "PeaZip for Mac OS". 2011-08-17. http://peazip.org/peazip-help-faq.html#OSX. Retrieved 2011-08-17. 
5. ^ "PeaZip for BSD". 2011-08-18. http://peazip.org/peazip-help-faq.html#BSD. Retrieved 2011-08-18. 
6. ^ Federico Kereki (2008-03-05). "Archive files in both Windows and Linux using PeaZip". Linux.com. http://www.linux.com/feature/127889. Retrieved 2008-04-09. 
7. ^ Jason Parker (2007-12-11). "Killer Download: Top file compression alternatives". Download.com. http://www.download.com/8301-2007_4-9832605-12.html. Retrieved 2008-04-09. 
8. ^ O. James Fagbire (2007-09-26). "PeaZip Compression Software". Free Downloads Center. http://blog.freedownloadscenter.com/2007/09/26/peazip-compression-software/. Retrieved 2008-04-09. 
9. ^ http://www.peazip.org/
10. ^ Ionut Ilascu (2007-04-10). "Get Your Files Wrapped". Softpedia. http://www.softpedia.com/reviews/windows/PeaZip-Review-51601.shtml. Retrieved 2008-04-09. 
11. ^ Mihai Marinof (2007-04-10). "PeaZip Review". Softpedia. http://www.softpedia.com/reviews/linux/PeaZip-Review-51545.shtml. Retrieved 2008-04-09. 
12. ^ "Compress files with the greatest of ease". Softonic. http://peazip.en.softonic.com/. Retrieved 2008-04-09. 
13. ^ Zach Hudock; Giorgio Tani (2008-03-25). "PeaZip Portable". PortableApps.com. http://portableapps.com/apps/utilities/peazip_portable. Retrieved 2008-04-09. 
14. ^ "Summary of the multiple file compression benchmark tests". Maximum Compression. http://www.maximumcompression.com/data/summary_mf.php. Retrieved 2008-04-09. 
15. ^ Matt Mahoney (2008-04-06). "Large Text Compression Benchmark". http://cs.fit.edu/~mmahoney/compression/text.html. Retrieved 2008-04-09. "The "better" option chooses best compression (equivalent to gzip -9)." 
16. ^ Peazip introduction Retrieved on 2009-07-06
17. ^ Tani, Giorgio (2008-03-20) (PDF). PEA. http://www.peazip.org/pea_help.pdf. ^{[verification needed]}
18. ^ Igor Pavlov. "Links". http://www.7-zip.org/links.html. Retrieved 2008-04-09. "Applications that work with .7z archives:" 
19. ^ Bulat Ziganshin. "Download FreeArc". http://freearc.org/Download.aspx. Retrieved 2008-04-09. "Third-party GUI for FreeArc" 
20. ^ Matt Mahoney (2008-03-09). "Data Compression Programs". http://cs.fit.edu/~mmahoney/compression/. Retrieved 2008-04-09. "PeaZip (Giorgio Tani) is a GUI front end for Windows and Linux that supports the paq8o, lpaq1, and many other compression formats." 

External links

• PeaZip home page
• Pea archiving utility and PEA file format specifications
• PeaZip on Google Code