7-zip

Version: 4.65 || Release Date: 2009-02-03 || License: Freeware App Owner: locks

Open source Windows utility for manipulating archives. Formats 7z, ZIP, GZIP, BZIP2 and TAR are supported fully, other formats can be unpacked.

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6 Opinions

Allows to store comments about files. (In a hidden descript.ion file.)

winrar is better at handling installation packages, because you can directly click on the setup executable, and it will extract all files in a temporary folder.
7-zip on the other hand, requires you to manually extract the files, find this new folder in explorer, then launch the setup executable.

(Tested with v. 4.57, still true with v. 4.65 afaik.)

and powerful at command line, strong switches! like backup update

superior to winrar - and free, no less! also, the .7z format seems to be capable of higher compression rates for most files than .rar and .zip.

generally faster than winzip, windows archive, and winrar

Incredibly useful utility.