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1999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://dl.7-zip.org/7z923.exe
http://dl.7-zip.org/7z923.msi
7-Zip for 64-bit Windows x64:
http://dl.7-zip.org/7z923-x64.msi
- The format of language files was changed.
- Now it's possible to specify viewer program for F3 key.
- Some bugs were fixed.
- New localization: Karakalpak.
http://dl.7-zip.org/7z923.exe
http://dl.7-zip.org/7z923.msi
7-Zip for 64-bit Windows x64:
http://dl.7-zip.org/7z923-x64.msi
- The format of language files was changed.
- Now it's possible to specify viewer program for F3 key.
- Some bugs were fixed.
- New localization: Karakalpak.