PeaZip Portable 4.1 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 4.1 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.

Release notes 4.1 (2011 10 22)
PeaZip 4.1 brings various speed and responsiveness improvements, especially when handling thousands of files at once in the file/archive manager.
The new release also introduces many usability improvements like simpler search and renaming functions, better UAC integration, improved address bar, more information provided during job's execution, and re-organized keyboard shortcuts.
Package files were further optimized in size providing by default only the synthetic localized mini tutorial, while the PDF help file is now available online and can be separately viewed or saved by users, only if needed.
The file manager now features a fully integrated tool to find duplicate files or calculating CRC/hash using a wide array of algorithms, operating on selected files, or on files displayed in current directory or search filter.
Pea backend was updated to 0.39 version.

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

CODE
Optimized installer, help file is now by default online, users save it locally only if desired

FILE MANAGER
- File tools
Checksum/hash (selected/displayed) files fully integrated in file manager, algorithm can be selected from a wide array of 15 algorithms: Adler32, CRC16/24/32/64, eDonkey, MD4, MD5, Ripemd160, SHA1, SHA224/256/386/512, Whirlpool512
Fast duplicate finder (selected/displayed) fully integrated in file manager, can find duplicate files in directories or search filters, uses the algorithm selected for Checksum/hash function
Split/Join file entry hidden in File tools submenu, as the features are fully integrated in Add/Extract
Fixed: quick and secure delete functions can now operate on read only files (Windows)
Improved handling potentially lengthy job interacting with file manager
checksum, find duplicates and rename displays progress in title bar, and have an uniform activity indicator (progress bar in address bar), and uniform model for stopping (stop button in address bar)
- Improved address bar
Added history context menu to back and forward icons
Added computer's root icon in address bar's breadcrumb
Added context menu with synthetic quick jump list (most common filesystem paths and bookmarks 1..8) to computer's root icon
- Keyboard shortcuts
Ctrl+F2 copy to
Shift+F2 move to
Ctrl+F4 browse computer root (Ctrl+U removed)
Shift+F4 browse desktop
F7 add to bookmarks
Ctrl+F7 open in a new instance of PeaZip
Shif+F7 open command prompt in selected path
Alt+F7 explore selected path
Advanced filters shortcut changed to Shift+F9
Ctrl+F10 run as different user
Alt+F10 run as administrator
F11 toggle maximized mode
- Rename single or multiple selected files using middle mouse button
- Search
Searching from filter field now apply recursivity, if set, as searching with F3
Simple search mode in Organize menu (optional, flagged by default) for easier searches
- Various speed and responsiveness improvements
(Windows Vista and newer) UAC integration: main menu Options > Run as administrator (Alt+F10) to perform operations requiring elevated permission
(Linux) fixed problem in Ctrl+A to select all

EXTRACTION and ARCHIVING
Archiving path is cheched if accessible and writeable before attempting to write the output file
More information given in the graphic wrapper during extraction/archiving operations