7-Zip 9.25 Alpha

7-Zip is an open source file archiver with the high compression ratio predominantly for the
 Microsoft Windows operating system. It operates either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment. 7-Zip is free software, developed by Igor Pavlov and distributed under the GNU LGPL license.
The main features of 7-Zip:
• High compression ratio in new 7z format with LZMA compression
• Supported formats:
- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
- 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 74 languages
Changes in 7-Zip 9.25 Alpha, 2011-10-21:
- LZMA decompression speed was improved
- "compress and send to email" code was improved to support more email clients
- New command "h" to calculate hash values CRC-32, CRC-64, SHA-256 or SHA-1 for files on disk
- New -spf switch to store full file paths including drive letter to archive. If you use that switch with extract command, please check that file names in archive are correct
- Some bugs were fixed
- NOTE: New -spf switch feature is for testing only! That code is still under development. Please write about any bugs there. It stores full file paths to archive only if you specify these full paths in command
7-Zip for 32-bit Windows:
http://dl.7-zip.org/7z925.exe
or
http://dl.7-zip.org/7z925.msi
7-Zip for 64-bit Windows x64:
http://dl.7-zip.org/7z925-x64.msi