7-Zip 4.57

7-Zip 4.57 File Compression.Training and preview software.
Publisher's description of 7-Zip.
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 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. Version 4.57 supports WinZip-compatible AES-256 encryption for .ZIP archives and 7-Zip can unpack MSI and WIM archives now. Also there are some speed optimizations.
It's easy for Windows users to forget that WinZip isn't the only file-compression utility in the world. Like its better-known competitors, the free 7-Zip unpacks a host of archive formats, including ZIP, TAR, GZ, and its own 7z format. Unlike WinZip, though, it can create TAR and GZ archives, which are commonly used on Unix and Linux systems.
The program's ability to shrink files was stunning. In our tests, 7z archives were up to 40 percent smaller then their ZIP equivalents, although compression did take longer, and the highest compression settings can hog system resources. Advanced options include the ability to create solid and self-extracting archives, and to adjust the compression level and password protection. The program also has a command line module. Though the main interface is overly simple and looks like it was designed for Windows 95, it's not hard to use and fairly self-explanatory. The context menu options, which include "testing" an archive, indicate that 7-Zip should be taken seriously.
7-Zip is fine for casual users with a bit of computer savvy, but it's especially well-suited for developers and anyone else who moves between the Windows and Linux/Unix worlds.

Ref: download.com

License:Free
Requirements: Windows 98/Me/NT/2000/XP/2003 Server/Vista
Limitations: No limitations
Download Program : http://www.7-zip.org/

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7-Zip v.4.57 หนึ่งในโปรแกรมฟรี ที่น่าใช้ วิธีติดตั้งก็ง่ายครับ ดาวโหลดมา แล้วก็ดับเบิ้ลคลิ๊ก แล้วก็ Next ไปเรื่อยๆ เหนื่อยก็หยุด 555.. จนติดตั้งเสร็จ สามารถติดตั้ง ร่วมกับโปรแกรม บีบอัด อื่นๆได้ ไม่มีปัญหา ใช้ในวินโด้ 95 ขึ้นมา รองรับฟอร์แม็ทไฟล์ ZIP, TAR, GZ,7z เหมาะสำหรับใครที่ชอบเปิดไฟล์ Linux Unix ในวินโด้ จะเอามาเปิดทำไมว้า 555..ก็เผื่อว่า อยากพัฒนาต่อน่ะ

วิธีใช้..แสนง่าย ถ้าจะคายไฟล์ ก็เปิดไฟล์ด้วย โปรแกรม 7-Zip แล้วลากไปลงโฟลเดอร์ ที่ต้องการ