7-Zip解压软件是一个开放源码的数据压缩程序，主要用在Microsoft Windows操作系统，Unix-like的操作系统如Linux与FreeBSD下面有7-zip的移植版本p7zip可以使用。ZOl提供7zip中文版下载，7-zip正式版官方下载安装。7-Zip是一款GNU/LPGL协议下分发的免费软件，可以说是目前最有希望成为zip、rar之后的下一个主流压缩格式的文件压缩格式了。7zip的压缩率是他最大的竞争优势，在选择普通压缩率的情况下我们已经可以轻松击败winrar的最高压缩率了。但是7zip也不完美(要是完美了，RAR就已经被取代了)，主要是软件的界面依然不够优秀，格式本身对于分卷压缩的支持也不好，但是这不妨碍7zip成为最有潜力的压缩格式。 7-Zip 正式版主要特征： 更新了算法来加大 7z 格式 的压缩比 7-Zip 是基于 GNU LGPL 之下发布的软件 支持格式： 压缩及解压缩：7z、ZIP、GZIP、BZIP2 和 TAR 仅解压缩：RAR、CAB、ISO、ARJ、LZH、CHM、Z、CPIO、RPM、DEB 和 NSIS 对于 ZIP 及 GZIP 格式，7-Zip 能提供比使用 PKZip 及 WinZip 高 2-10% 的压缩比 7z 格式支持创建自释放(SFX)压缩档案 集成 Windows 外壳扩展 强大的的文件管理 强大的命令行版本 支持 FAR Manager 插件 支持 63 种语言更新日志：7-Zip 9.20.11:What's new: - 7-Zip now can unpack UEFI BIOS files. - 64-bit version of 7-Zip now includes additional 32-bit shell extension DLL. So other 32-bit programs can call 64-bit 7-Zip via context menu. - Now it's possible to associate 7-Zip with file types without Administrator rights. - New -mf=FilterID switch to specify compression filter. Examples: 7z a -mf=bcj2 a.7z a.tar 7z a -mf=delta:4 a.7z a.wav 7z a -mf=bcj a.tar.xz a.tar - There are some changes in LZMA settings for BCJ2 filter. So compression ratio now is slightly improved for executable files in -mx9 mode for .7z format. - Some bugs were fixed. - New localizations: Corsican, Kyrgyz, Ligurian. What's new in latest alpha update: - 7-Zip now remembers "Show Password" option selection. - The bug in latest alpha versions was fixed: Default solid block size was small (command line version only).9.20.09 Alpha更新：- The bug was fixed: 7-Zip File Manager could work incorrectly with archivesin "Flat View" mode.- 7-Zip File Manager now can update file in archive even if the file name isnot supported by Windows.-9.20.06 Alpha - 7-Zip now can unpack UEFI BIOS files.- 64-bit version of 7-Zip now includes additional 32-bit shell extension DLL. So other 32-bit programs can call 64-bit 7-Zip via context menu.- Now it's possible to associate 7-Zip with file types without Administratorrights.- New -mf=FilterID switch to specify compression filter. Examples:7z a -mf=bcj2 a.7z a.tar7z a -mf=delta:4 a.7z a.wav7z a -mf=bcj a.tar.xz a.tar- There are some changes in LZMA settings for BCJ2 filter. So compression ratio now is slightly improved for executable files in -mx9mode for .7z format.- Some bugs were fixed.- New localizations: Corsican, Kyrgyz.-9.20.04 Alpha 7-Zip now can unpack UEFI BIOS files. - 64-bit version of 7-Zip now includes additional 32-bit shell extension DLL. So other 32-bit programs can call 64-bit 7-Zip via context menu. - Now it's possible to associate 7-Zip with file types without Administrator rights. - Some bugs were fixed.- New localizations: Corsican, Kyrgyz.7—zip 9.15 版本新功能：修正了已知错误 新增本地化语言：Tatar（鞑靼语） 7—zip 9.14 版本新功能：- WIM support was improved. 7-Zip now can create WIM archives without compression. Please check the compatibility between 7-Zip and Windows for WIM archives.7—zip 9.13 版本新功能：7-Zip now stores NTFS file timestamps to ZIP archives.New additional "Open archive >" item in context menu allows to selectarchive type for some files.Some bugs were fixed.New localization: Uyghur.
