PeaZip Portable 4.2 has been released. PeaZip Portable is the easy to use PeaZip file archiver packaged as a portable app, so you can take your file archiver with you and work with your compressed 7z, ZIP, GZIP, BZIP2, TAR, RAR files and more on the go. This release updates the included PeaZip to the latest release. It's packaged in PortableApps.com Format so it can easily integrate with the PortableApps.com Suite. And it's open source and completely free.

PeaZip Portable is packaged in a PortableApps.com Installer so it will automatically detect an existing PortableApps.com installation when your drive is plugged in. It supports upgrades by installing right over an existing copy, preserving all settings. And it's in PortableApps.com Format, so it automatically works with the PortableApps.com Suite including the Menu and Backup Utility.

PeaZip can extract most of archive formats both from Windows and Unix worlds: currently 134 file extensions are supported ranging from mainstream 7Z, RAR, TAR and ZIP to experimental ones like PAQ/LPAQ family, currently the most powerful compressor available.
For archive creation, PeaZip suppors a wide range of compression and encryption standard, from fastes to most powerful ones, and allows to export job definition as scripts to bridge the gap between GUI and console applications, and let the user pick the best of the two worlds.

Features:
* Full support (read and write)
o 7Z, 7Z-sfx, ARC/WRC, BZ2/TBZ2, custom, GZ/TGZ, PAQ/LPAQ, PEA, QUAD/BALZ, split, TAR, UPX, ZIP
* Read only (browse, extract, test)
o ACE, ARJ, CAB, CHM, COMPOUND (MSI, DOC, XLS, PPT), CPIO, ISO, Java (JAR, EAR, WAR), NSIS, Open Office files, PAK/PK3/PK4, RAR, SMZIP, U3P, UDF, VHD, WIM, XAR, XPI, XZ, Z/TZ, ...
* Repair
o ARC

PeaZip allows
* edit
* save and restore the contents of archives;
* Use powerful filters;
* handle multivolume archives at once;
* store the parameters of tasks;
* AES256 encryption, etc.
- Additional features:
* split / join files
* delete files
* compare
* create a file checksums
* performance test systems, etc.

Security
PeaZip has secure deletion feature, can verify file checksum and hash, and supports multiple strong encryption standards, optionally using two factor authentication (password and keyfile) for increased security:
* 7Z's AES256 encryption
* ZIP WinZip's AE encryption based on AES256 (and ZipCrypto for legacy compatibility); can decrypt PKZip's AES encryption
* FreeARC's ARC: AES256, Blowfish, Twofish256 and Serpent256 - this format is also capable to generate recovery records to protect data against corruption
* PEA: AES256 EAX authenticated encryption

Release notes (2011 11 20)
PeaZip 4.2 brings various fixes, and continue 4.x series trend in offering more compact installer, better speed and responsiveness, and to show more information during operations.
The new release also improves support for FreeArc's ARC format, allowing creating ARC archives storing relative paths by default.
A total of 134 file extensions are supported, and translations are available in 27 languages.

Change log 4.2
FILE MANAGER
- Immersive mode for file browser (full screen, no window border), toggle with Ctrl+F11 (option is volatile, not saved in configuration, it is just meant for enhancing browsing space on request)
- Improved custom applications menus
* allows 8 more applications, links or scripts
* automatically detects recent AVG versions, Microsoft Security Essentials, Google Chrome
- Improved thumbnail viewer
* does not rebuild thumbnails when sorting
* free memory changing small/large icon size
- Fixed: (Windows) browsing computer's root may fail at application startup
- Fixed: (Windows) loading list of objects from system context menu may not work under some conditions, only the first time application runs in a session
- Fixed: descending sorting is now remembered
- Fixed: correct size is now reported in status bar for selected items over 2GB
- Various minor fixes and improvements
EXTRACTION and ARCHIVING
- ARC format, now archiving relative paths by default, optionally absolute paths can be stored (advanced options tab in archive creation interface)
- More information dispayed in report tab during operation: completed strings are displayed
WINDOWS INSTALLER
- Reduce packages size
* some superseeded formats (lpaq1/5, paq8f/jd/l) moved to external plugin
* uses uncompressed Winodws icons (package compression is more efficient)