免费开源解压缩利器：7-Zip v17.01 BETA

著名的免费开源压缩/解压缩工具：7-Zip是一款开源免费的号称有着现今最高压缩比的压缩软件，它不仅支持独有的7z文件格式，而且还支持各种其它压缩文件格式，其中包括ZIP, RAR, CAB, GZIP, BZIP2和TAR等等。此软件压缩的压缩比要比普通ZIP文件高30-50%，因此，它可以把Zip格式的文件再压缩2-10%。

官方更新日志：

http://www.7-zip.org/history.txt  

17.01 beta 2017-08-28
– 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 [email protected] before — switch instead.
– The BUGs were 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.

官方下载地址：

7-Zip 17.01 Beta 

http://www.7-zip.org/a/7z1701.exe
http://www.7-zip.org/a/7z1701-x64.exe 

7-Zip 16.04 Final  

http://www.7-zip.org/a/7z1604.exe
http://www.7-zip.org/a/7z1604-x64.exe  

7-Zip 17.01 Beta / 16.04 Final 绿色便携版本 by Jooseng / Dave
7-Zip 17.01 Beta / 16.04 Final 完整中文美化版 by 飞扬时空 / 木偶 

by 木偶
—集成32及64位，汉化官方简体中文没翻译的地方
—美化程序图标、美化关联图标、美化工具栏图标

by 飞扬时空
（关联图标资源基于网友 Sparanoid 版本修订）
– 汉化部分英文资源、集成中文帮助文件、美化文件关联图标
– 集成附加扩展资源、优化程序参数设置、集成32及64位版本

http://pan.baidu.com/s/1slNT9E1 

https://zdfans.ctfile.com/dir/16343-18281526-fef4fe/