7-Zip v20.00 Alpha，免费开源的解压缩利器

7-Zip – 知名免费开源文件解压缩软件。7-Zip是一款免费开源的号称有着现今最高压缩比的文件压缩管理软件，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，包括ZIP, RAR, CAB, GZIP, BZIP2和TAR等等。其多线程压缩比要比普通ZIP文件高达30-50%，因此，它可以把Zip格式的文件再压缩2-10%。

新版变化

7-zip.org/history.txt

20.00 alpha 2020-02-06
- 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.

下载地址

7-Zip 20.00 Alpha (x32/x64)
https://www.7-zip.org/a/7z2000.exe
https://www.7-zip.org/a/7z2000-x64.exe

7-Zip 19.00 Final (x32/x64) 正式版
https://www.7-zip.org/a/7z1900.exe
https://www.7-zip.org/a/7z1900-x64.exe

7-Zip v19.00 正式版修订简体中文美化版