This software is available under GPL v2 license.
You can also download the deprecated objective-c version. This version is no longer supported, but can run on 10.8+ systems.

Version history

v 4.6 29.07.17

  • Minor speed optimization for LZMA2 (xz and b6z file extension) multi-threading compression.
  • CPU utilization was slightly improved.
  • B6Zip now uses additional memory buffers for multi-block LZMA2 compression.
  • B6Zip now can create b6z archives from stdin to stdout.

v 4.4 19.07.17

  • Some bugs were fixed. B6Zip could crash in some cases.
  • B6Zip now can extract ext2 and multivolume VMDK images.
  • Speed optimizations for BCJ2 filter and SHA-1 and SHA-256 calculation.
  • B6Zip now can update WIM archives.
  • Many other fixes and improvements.

v 4.2 04.07.17

  • Bug fixes and minor improvements

v 4.0 30.06.17

  • LZMA decompression speed was improved.
  • New command to calculate hash values CRC-32, CRC-64, SHA-256 or SHA-1 for files on disk.
  • The format of language files was changed.
  • B6Zip now can unpack GZip, BZip2, LZMA, XZ and TAR archives from stdin.
  • Change your language in Settings.
  • Dozens of other quality of life improvements.

v 3.8 25.04.17

  • B6Zip now can unpack UDF, XAR and DMG/HFS archives.
  • Decompression speed was increased.
  • Bug fixes and improvements

v 3.6 03.01.17

  • Speed optimizations for LZMA, Deflate, B6Z and unRAR.
  • Compressing speed and Memory requirements were increased. Default dictionary size was increased: Fastest: 64 KB, Fast: 1 MB, Normal: 4 MB, Max: 16 MB, Ultra: 64 MB.
  • Small changes

v 3.4 20.11.16

  • Speed optimizations in B6Z maximum/ultra compressing.
  • Squashed several bugs, including an issue that would cause unusually high CPU usage.