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ΔημοσίευσηΘέμα: Συμπίεση & αποσυμπίεση αρχείων   03.11.08 12:38

Portable 7-Zip v4.65



The main features of 7-Zip
* High compression ratio in new 7z format with LZMA compression
* Supported formats:
o Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
o Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, MSI, WIM, Z, CPIO, RPM, DEB and NSIS
* For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by
PKZip and WinZip
* Strong AES-256 encryption in 7z and ZIP formats
* Self-extracting capability for 7z format
* Integration with Windows Shell
* Powerful File Manager
* Powerful command line version
* Plugin for FAR Manager
* Localizations for 69 languages

7-Zip works in Windows 98/ME/NT/2000/XP/Vista. There is a port of the command line version to Linux/Unix.

On 7-Zip's Source Forge Page you can find a forum, bug reports, and feature request systems.

7z is the new archive format, providing high compression ratio.

The main features of 7z format:
* Open architecture
* High compression ratio
* Strong AES-256 encryption
* Ability of using any compression, conversion or encryption method
* Supporting files with sizes up to 16000000000 GB
* Unicode file names
* Solid compressing
* Archive headers compressing

LZMA is default and general compression method of 7z format. The main features of LZMA method:
* High compression ratio
* Variable dictionary size (up to 4 GB)
* Compressing speed: about 1 MB/s on 2 GHz CPU
* Decompressing speed: about 10-20 MB/s on 2 GHz CPU
* Small memory requirements for decompressing (depend from dictionary size)
* Small code size for decompressing: about 5 KB
* Supporting multi-threading and P4's hyper-threading

LZMA compression algorithm is very suitable for embedded applications. LZMA is released under the terms of the GNU LGPL. LZMA is also available under a proprietary license for those who can not use the GNU LGPL in their code. If you want to use LZMA code, you can ask consultations, custom code programming and required developer licenses from page for support: Send message to LZMA developer. Check also information about LZMA SDK.

7-Zip also supports encryption with AES-256 algorithm. This algorithm uses cipher key with length of 256 bits. To create that key 7-Zip uses derivation function based on SHA-256 hash algorithm. A key derivation function produces a derived key from text password defined by user. For increasing the cost of exhaustive search for passwords 7-Zip uses big number of iterations to produce cipher key from text password.

Release date v4.65 - 2009-02-03
- 7-Zip File Manager now can calculate SHA-256 checksum.
- Some bugs were fixed.

7zip : The official site for free download
Thanks to imfamous > dl4all


Έχει επεξεργασθεί από τον/την Admin στις 05.05.10 11:02, 7 φορές συνολικά
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ΔημοσίευσηΘέμα: Απ: Συμπίεση & αποσυμπίεση αρχείων   27.02.09 10:52

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ΔημοσίευσηΘέμα: Απ: Συμπίεση & αποσυμπίεση αρχείων   06.05.09 13:38

Winrar 2009 V.2.0



WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives.

WinRAR puts you ahead of the crowd when it comes to compression.
By consistently creating smaller archives, WinRAR is often faster than the competition.

This will save you disc space, transmission costs AND valuable working time as well.
WinRAR supports all popular compression formats (RAR, ZIP, CAB, ARJ, LZH, ACE, TAR, GZip, UUE, ISO, BZIP2, Z and 7-Zip).

Features:

RAR (WinRAR), the powerful archiver and archive manager (Win32, Linux, Mac)WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives.

WinRAR puts you ahead of the crowd when it comes to compression. By consistently creating smaller archives, WinRAR is often faster than the competition.
This will save you disc space, transmission costs AND valuable working time as well.
WinRAR supports all popular compression formats (RAR, ZIP, CAB, ARJ, LZH, ACE, TAR, GZip, UUE, ISO, BZIP2, Z and 7-Zip).

WinRAR is ideal for multimedia files.
WinRAR automatically recognizes and selects the best compression method.
The specialcompression algorithm compresses multimedia files, executables and object libraries particularly well.

WinRAR allows you to split archives into separate volumes easily, making it possible to save them on several disks for example.
WinRAR is also ideal, if you are sending data through the web.
Its 128 bit password encryption and its authenticated signature technology will give you the peace of mind you have been looking for.

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ΔημοσίευσηΘέμα: Απ: Συμπίεση & αποσυμπίεση αρχείων   26.09.09 13:36

WinRAR 3.90 Ελληνικό (32 & 64 bit) - Final



WinRAR is a powerful archive manager (Win32, Linux, Mac). RAR files can usually compress content by 8 percent to 15 percent more than ZIP files can. WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format.
WinRAR puts you ahead of the crowd when it comes to compression. By consistently creating smaller archives, WinRAR is often faster than the competition. This will save you disc space, transmission costs AND valuable working time as well. WinRAR is ideal for multimedia files. WinRAR automatically recognizes and selects the best compression method. The special compression algorithm compresses multimedia files, executables and object libraries particularly well.

Features of WinRAR:
• Using WinRAR puts you ahead of the crowd when it comes to compression by consistently making smaller archives than the competition, saving disk space and transmission costs.
• WinRAR provides complete support for RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives.
• WinRAR offers a graphic interactive interface utilizing mouse and menus as well as the command line interface.
• WinRAR is easier to use than many other archivers with the inclusion of a special "Wizard" mode which allows instant access to the basic archiving functions through a simple question and answer procedure. This avoids confusion in the early stages of use.
• WinRAR offers you the benefit of industry strength archive encryption using AES (Advanced Encryption Standard) with a key of 128 bits.
• WinRAR supports files and archives up to 8,589 billion gigabytes in size. The number of archived files is, for all practical purposes, unlimited.
• WinRAR offers the ability to create selfextracting and multivolume archives.
Recovery record and recovery volumes allow to reconstruct even physically damaged archives.
• WinRAR features are constantly being developed to keep WinRAR ahead of the pack.

Changes in Version 3.90:
1. WinRAR version for Windows x64 is available. If you use Windows x64, it is strongly recommended to install 64 bit WinRAR version. It provides a higher performance and better shell integration than 32 bit version.
2. RAR compression speed is improved for multi-core and multi-CPU systems. This improvement is most noticeable in Windows Vista and Windows 7 operating systems.
3. "Remove duplicate folders from extraction path" option in "Settings/Compression" dialog is replaced by more universal "Remove redundant folders from extraction path" option. This option will eliminate redundant archive name based folders from extraction path if you unpack an archive with "Extract to DestName\" context menu command and if archive root folder contains only one folder and no files.
4. Changes in "Extraction path and options" dialog:
a) "New folder" button creates a new subfolder in currently selected folder;
b) F2 key renames a selected folder in the folders tree;
c) F5 key updated the tree pane contents;
d) Del key removes a selected folder in the folders tree.
5. You can enable "Show seconds" option in "Settings/File list" dialog if you wish to see seconds in file dates in file list in WinRAR shell.
6. "Where to check for SFX archives" options group in "Settings/Integration/Context menus items" dialog lets you to control processing of SFX archives in context menus. For example, if you frequently right click ".exe" files on slow network disks, you can turn off "Network disks" options to minimize the delay before displaying the context menu.
7. If you sort files by name in the file list in WinRAR shell, WinRAR will use the new logical file name sorting, same as in Windows Explorer, considering digits in file names by their numerical value. So files will be sorted as 1.txt, 2.txt, 10.txt instead of previous 1.txt, 10.txt, 2.txt. This new sort behavior is available in Windows XP Service Pack 2 and newer.
8. Ctrl+W key combination can be used to close the main WinRAR window also as WinRAR viewer windows. "View as Windows text" shortcut in WinRAR viewer changed from Ctrl+W to Ctrl+I.
9. New command line switch -r- disables recursion completely. So 'rar a -r- arc dirname' command will add only the empty dirname folder and ignore its contents. By default, if dirname does not include wildcards, RAR adds its contents even if -r switch is not specified.
10. If used when extracting, the new command line switch -ai forces RAR to ignore file attributes. When using this switch, extracted files will always have attributes assigned by operating system to a newly created file by default.
11. If output file name is not specified in "cw" command, console RAR will send comment data to stdout.
12. When compressing stdin data with -si[name] switch, RAR sets modification time of archived entry to current system time. Previous RAR versions did not fill this field, resulting in meaningless modification time for stdin.
13. Message displayed when you place the mouse cursor on WinRAR tray icon includes the archive name now. Previously only time left and total percent were displayed for archiving operations.
14. New 'Shutdown' variable in 'Software\WinRAR\Policy' registry key allows to disable "Turn PC off when done" option for security reasons. Read "Configuration settings/Registry variables" for more details.
15. Better shell extension performance. Now WinRAR context menu will be more responsive when working with thousands of selected files.
16. Improved compatibility with high DPI Windows display mode.
17. Bugs fixed:
a) WinRAR could fail to open tar or tar.gz archive if such archive contained a file larger than 8 GB;
b) WinRAR context menu did not work properly in Windows 7 beta if icons in context menus were enabled and user clicked a file inside of Windows 7 Library folder;
c) previous WinRAR versions failed to rename files having 5 or more continuous spaces in the name. WinRAR shell does not display such spaces for safety reasons, because they can hide an actual file extension. But this security measure prevented the rename command to work properly.

Homepage - http://www.rarlab.com

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