Download 7-Zip 17.01 Beta

Version 17.01 beta of 7-Zip has been released. This open source archiver can handle a wide range of compression formats, including zip, cab, rar, arj, lzh, chm, gzip, bzip2, z, tar, cpio, rpm, deb and of course the proprietary 7z. Furthermore, the software is able to open iso files and nsis installation packages. New in version 16 is that the program can now handle large z01 and z02 zip files spread over multiple files. Previously it could handle zip.001 and zip.002. The following changes and improvements have been made in this version:

what’s new

• Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.
  7-Zip now uses additional memory buffers for multi-block LZMA2 compression.
  CPU utilization was slightly improved.
• 7-zip now creates multi-block xz archives by default. Block size can be
  specified with -ms[Size]{m|g} switch.
• xz decoder now can unpack random block from multi-block xz archives.
  7-Zip File Manager now can open nested multi-block xz archives
  (for example, image.iso.xz) without full unpacking of xz archive.
• 7-Zip now can create zip archives from stdin to stdout.
• 7-Zip command line: @listfile now doesn’t work after — switch.
  Use -i@listfile before — switch instead.

Bug fixed:

• 7-Zip could add unrequired alternate file streams to WIM archives,
  for commands that contain filename wildcards and -sns switch.
• 7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.
• 7-Zip 17.00 beta ignored “Use large memory pages” option.