7-Zip
7-Zip is a file archiver with high compression ratio. 7-Zip is free software distributed under the GNU LGPL. 7-Zip works in Windows 98/ME/NT/2000/XP. There is port of command line version for Linux/Unix.
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7-Zip is a compression utility that lets you create, update, extract archive files of four most popular formats on the Internet: zip, gzip, tar and bzip2. Its simple, no-nonsense interface is integrated in the shell and can be accessed via the right-button menu. 7-Zip borrows much of its interface from the shell itself - an opened archive file looks as if it were a plain Explorer window. The only difference is the 'Extract' button. Owing mainly to that, the tool is incredibly fast even with huge archives with lots of subfolders and hundreds of files. The program also compresses files into smaller archives, some 40 or 50% smaller comparing to WinZip.
Besides the standard GUI interface, all the functions of the program can be accessed through the command line. Download this free tool today and enjoy this fast and reliable compression tool. Some of the main features of 7-Zip are: - High compression ratio in new 7z format with LZMA compression
- 7-Zip is free software distributed under the GNU LGPL
- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
- Unpacking only: RAR, CAB, ARJ, LZH, CHM, Z, CPIO, RPM and DEB
- For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
- Self-extracting capability for 7z format
- Integration with Windows Shell
- Powerful File Manager
- Powerful command line version
- Plugin for FAR Manager
- Localizations for 60 languages
The main features of .7z format are: - 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
The requirements of the 7-Zip program are: 
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