7-Zip 4.65

7-Zip is a file archiver with a high compression ratio.

The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, ISO, MSI, WIM, NSIS, RPM and DEB formats.

The main features of 7-Zip:

• High compression ratio in new 7z format with LZMA compression
• Supported formats:

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

7-Zip is open source software. Windows 98/ME/NT/2000/XP/Vista.