7-Zip 9.34 Alpha - Neowin
It's available in 32-bit and 64-bit version s. Not pretty to look at, 7-Zip provides plenty of control for how you create your archives. For instance, 7-Zip can compress and decompress WinZip-compatible AES-encrypted .zip files. That's vital if you need to e-mail sensitive data, because the .zip format's standard password protection (the only kind Windows supports) is easy to crack. But with 7-Zip, you can share truly-secure data with people who use WinZip, PKZip, WinRar , PowerArchiver, and other programs. And if they use none of those programs and don't want to spend money, you can tell them to get 7-Zip. 7-Zip also allows you to compress and e-mail files in one easy step. Just right-click a file or files in [source] Windows Explorer and select 7-Zip then Compress and email. It even has its own compression format, although I recommend sticking to .zip for compatibility purposes.
Original article here: http://www.pcworld.com/article/194359/7Zip.html
The program supports 7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM, ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, Z. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license . You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. The main features of 7-Zip are: High compression ratio in new 7z format with LZMA compression Compression ratio for ZIP and GZIP formats: 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
Original article here: http://www.neowin.net/news/7-zip-934-alpha