7-Zip Stable Releases & Discussion

7-Zip v19.01 alpha (September 5, 2019)
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Spoiler: Changes v19.01 alpha

What's new after 7-Zip 19.00:

• 7-Zip now can unpack files encoded with Base64 encoding (b64 filename extension).
• 7-Zip now can use new x86/x64 hardware instructions for SHA-1 and SHA-256, supported
  by AMD Ryzen and latest Intel CPUs: Ice Lake and Goldmont.
  It increases
  • the speed of SHA-1/SHA-256 hash value calculation,
  • the speed of encryption/decryption in zip AES,
  • the speed of key derivation for encryption/decryption in 7z/zip/rar archives.
• The speed of zip AES encryption and 7z/zip/rar AES decryption was increased with
  the following improvements:
  • 7-Zip now can use new x86/x64 VAES (AVX Vector AES) instructions, supported by
    Intel Ice Lake CPU.
  • The existing code of x86/x64 AES-NI was improved also.
• There is 2% speed optimization in 7-Zip benchmark's decompression.
• Some bugs were fixed.

The source code of new version and another additional packages will be released later after some testing period.

 

7-Zip v19.02 alpha (September 5, 2019)

 

7-Zip v20.00 alpha (February 6, 2020)
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Spoiler: Changes v20.00 alpha

What's new after 7-Zip 19.02 alpha:

• 7-Zip now supports new optional match finders for LZMA/LZMA2 compression: bt5 and hc5,
  that can work faster than bt4 and hc4 match finders for the data with big redundancy.
• The compression ratio was improved for Fast and Fastest compression levels with the
  following default settings:
  • Fastest level (-mx1) : hc5 match finder with 256 KB dictionary.
  • Fast level (-mx3) : hc5 match finder with 4 MB dictionary.
• Minor speed optimizations in multithreaded LZMA/LZMA2 compression for Normal/Maximum/Ultra
  compression levels.
• bzip2 decoding code was updated to support bzip2 archives, created by lbzip2 program.
• Some bugs were fixed.
• New localization: Turkmen.

 

7-Zip v20.01 alpha (August 6, 2020)
Website
Announcement

Spoiler: Changes v20.01 alpha

What's new after 7-Zip 20.00 alpha:

• The default number of LZMA2 chunks per solid block in 7z archive was increased to 64.
  It allows to increase the compression speed for big 7z archives, if there is a big number
  of CPU cores and threads.
• The speed of PPMd compressing/decompressing was increased for 7z/ZIP/RAR archives.
• The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system
  to modify "Last Access Time" property of source files for archiving and hashing operations.
• Some bugs were fixed.
• New localization: Swahili.

 

A pity that SDK and extra are not available.

 

New version available:
7-Zip v20.02 alpha (August 8, 2020)

 

7-Zip Portable 19.00 Rev 3 (file archiver) Released (November 7, 2020) (PortableApps.com)

 

7-Zip v21.00 alpha (January 19, 2021)
Website
Announcement

 

7-Zip v21.01 alpha (March 10, 2021)
Website
Announcement

 

Thank you.
I have updated the specific folder in my Bandizip 5.23.

 

Thanks mood!

 

still running 19.00 because of the "extra" files (used anywhere here by command line) - i wish they would build those for 21.xx.

 

What do you mean by "extra" files?
Mrk

 

Extra files
https://www.7-zip.org/download.html

 

Oh got it, thanks.
Mrk

 

Extra can use hidden command line windows (x86 and x64 available). For experimental service I use "7zG.exe" + "7z.dll" (both needed) which offers a dialog and a progress bar - i don't need to program it as for the command line version. Nevertheless, the amount of exit codes is very small, but WinRAR has only twice that much (6 <> 13). But WinRAR is shareware, although it shows no nags in command line mode, and it uses registry while 7zip write nothing. About packaging size both are similar, I prefer 7z with 7zip so the latest stable is fine enough reading the changelog. you are welcome.

 

7-Zip v21.02 alpha (May 6, 2021)
Website
Announcement

 

7-Zip 21.03 beta (July 20, 2021)
Website
Announcement

 

Hello,

A new beta version of 7-Zip has been released: 21.03.
Website - Download - Forum/Discussion
History/Changelog (since alpha versions)

 

thank you.

yes

 

7-Zip 21.04 beta (November 2, 2021)
Website
Announcement

Spoiler: Changes v21.04 beta

What's new after 7-Zip 21.03 beta:

• 7-Zip now reduces the number of working CPU threads for compression, if RAM size is not enough for compression with big LZMA2 dictionary.
• 7-Zip now can create and check "file.sha256" text files that contain the list of file names and SHA-256 checksums in format compatible with sha256sum program. 7-Zip can work with such checksum files as with archives, but these files don't contain real file data.
  The context menu commands to create and test "sha256" files:

7-Zip / CRC SHA / SHA-256 -> file.sha256
7-Zip / CRC SHA / Test Archive : Checksum​

The commands for command line version:

7z a -thash file.sha256 *.txt
7z t -thash file.sha256
7z t -thash -shd. file.sha256​

• New -shd{dir_path} switch to set the directory that is used to check files referenced by "file.sha256" file for "Test" operation. If -shd{dir_path} is not specified, 7-Zip uses the directory where "file.sha256" is stored.
• New -xtd switch to exclude directory items from processing.

Note:
7-Zip's "Add to Archive" window now shows default options with asterisk character:

Compression method: * LZMA
Dictionary size: * 32 MB​

So there are some changes in code that selects default settings for each option. And 7-Zip tries to reduce the number of threads, if it can help to fit in RAM Size, if big dictionary size is specified.
Note also, that if you select default option with asterisk, that selected value will be not transferred to 7-zip compression engine. But 7-zip compression engine knows about default options, and it must use same values as shown to user in "Add to Archive" window.

 

Cool beans! 7-zip continues to perform admirably without fail.

 

Stable Release
7-Zip 21.05 (November 21, 2021)
Website
Announcement

 

Thank you.