7-Zip 9.20 - Final

[AvinashR]

7-Zip is an open source file archiver with the high compression ratio predominantly for the Microsoft Windows operating system. It operates either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment. 7-Zip is free software, developed by Igor Pavlov and distributed under the GNU LGPL license.

The main features of 7-Zip:

• High compression ratio in new 7z format with LZMA compression
• Supported formats:
- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
- 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
• Integration with Windows Shell
• Powerful File Manager
• Powerful command line version
• Plugin for FAR Manager
• Localizations for 74 languages

Changes in 7-Zip 9.20 (2010-11-18) : for Windows:

- 7-Zip File Manager now can calculate SHA-256 checksum.
- Some bugs were fixed.


Homepage:- http://www.7-zip.org (http://www.7-zip.org/)


Download 7-Zip 9.20 (32-bit) (http://downloads.sourceforge.net/sevenzip/7z920.exe)
Download 7-Zip 9.20 (64-bit) (http://downloads.sourceforge.net/sevenzip/7z920-x64.msi)

[J_L]

Thanks, but I think the changelog is longer if you're updating from stable.

What's with this huge version jump anyhow?

[funkydude]

Nice! Full changelog:

-{ Quote: "- Some bugs were fixed.
- The console version now doesn't show entered password.
- Some bugs were fixed.
- 7-Zip now can unpack SquashFS and CramFS filesystem images.
- 7-Zip now can unpack some TAR and ISO archives with incorrect headers.
- New small SFX module for installers (in Extra package).
- Some bugs were fixed.
- Disk fragmentation problem for ZIP archives created by 7-Zip was fixed.
- 7-Zip now supports files that are larger than 8 GB in TAR archives.
- NSIS support was improved.
- Some bugs were fixed.
- New localizations: Hindi, Gujarati, Sanskrit.
- Some bugs were fixed.
- New localization: Tatar.
- WIM support was improved.
- 7-Zip now stores NTFS file timestamps to ZIP archives.
- New additional "Open archive >" item in context menu allows to select
archive type for some files.
- Some bugs were fixed.
- New localization: Uyghur.
- ZIP / PPMd compression ratio was improved in Maximum and Ultra modes.
- The BUG in 7-Zip 9.* beta was fixed: LZMA2 codec didn't work,
if more than 10 threads were used (or more than 20 threads in some modes).
- 7-Zip now supports PPMd compression in ZIP archives.
- Speed optimizations in PPMd codec.
- The support for archives in installers was improved.
- Some bugs were fixed.
- New localization: Kazakh.
- The BUG in 7-Zip 9.09 beta was fixed:
7-Zip created incorrect ZIP archives, if ZipCrypto encryption was used.
- 7-Zip now can unpack Apple Partition Map (APM) disk images.
- Speed optimizations in AES code for Intel's 32nm CPUs.
- Speed optimizations in CRC calculation code for Intel's Atom CPUs.
- Some bugs were fixed.
- It's possible to specify Diff program in options (7-Zip File Manager).
- Some bugs were fixed.
- 7-Zip now can unpack MSLZ archives.
- Partial parsing for EXE resources, SWF and FLV.
- Some bugs were fixed.
- 7-Zip now can update solid .7z archives.
- 7-Zip now supports LZMA2 compression method.
- 7-Zip now supports XZ archives.
- 7-Zip now can unpack NTFS, FAT, VHD and MBR archives.
- 7-Zip now can unpack GZip, BZip2, LZMA, XZ and TAR archives from stdin.
- 7-Zip now can open/copy/compress disk images (like \\.\c:) from \\.\ folder.
- 7-Zip File Manager now doesn't use temp files to open nested archives
stored without compression.
- New -scrc switch to calculate total CRC-32 during extracting / testing.
- New -scc{WIN|DOS|UTF-8} switch to specify charset for console input/output (default = DOS).
- Some bugs were fixed." }-

I believe the version number changed to year.month

2009 being the year beta started and about 18 or so months since then.

[zapjb]

I was gonna say. Last I remember was v4.xx.

[Barthez]

Yes, main developer of 7-zip decided to get back to year.mouths/revision numbering again, so he jumped from 4.x to 9.x. (source (http://sourceforge.net/projects/sevenzip/forums/forum/45797/topic/3441139))

It's nice to see v. 9.x coming out of beta finally. Thanks for the heads up.

[JRViejo]

FYI. 7-Zip Portable 9.20 Released (http://portableapps.com/news/2010-11-22_-_7-zip_portable_9.20), courtesy of PortableApps.com.

[stapp]

Should I uninstall my old version of 7 zip first or can I install this over the top?

[funkydude]

You can install it over the top.

[Dermot7]

There is a 9.21 beta available to try:

http://sourceforge.net/projects/sevenzip/

+ changelog at their forum:

-http://sourceforge.net/projects/sevenzip/forums/forum/45797/topic/4479433-