7-Zip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。它提供命令行接口的程序或图形用户界面的程序，而且可以与资源管理器结合。7-Zip是自由软件，由Igor Pavlov于2000年开始发展，并把主体在GNU LGPL下发布，加密部份使用AES的代码，使用BSD license发布，解压RAR部分使用RAR特定的许可协议。
7-Zip for 32-bit Windows:
http://downloads.sourceforge.net/sevenzip/7z916.exe
7-Zip for 64-bit Windows x64:
http://downloads.sourceforge.net/sevenzip/7z916-x64.msi
What's new:
- 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.
7-Zip now supports BZip2 method in NSIS installers.
7-Zip now can extract identical files from NSIS installers.
http://downloads.sourceforge.net/sevenzip/7z916.exe
7-Zip for 64-bit Windows x64:
http://downloads.sourceforge.net/sevenzip/7z916-x64.msi
What's new:
- 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.
7-Zip now supports BZip2 method in NSIS installers.
7-Zip now can extract identical files from NSIS installers.