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.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 for 32-bit Windows:

http://downloads.sourceforge.net/sevenzip/7z912.exe

7-Zip for 64-bit Windows x64:

http://downloads.sourceforge.net/sevenzip/7z912-x64.msi

What's new:

- ZIP / PPMd compression ratio was improved in Maximum and Ultra modes.
- The BUG in 7-Zip 9.* beta was fixed: LZMA2 codec didn't work,
if more than 10 threads were used (or more than 20 threads in some modes).