When we need to handle some big file, we always compress the file with some compression tool to make it smaller. This can greatly save the disk space or the time to transfer.
7Zip is one of the famous compression software. It is s freeware which you can use it freely. You can use 7Zip on any computer, including a computer in a commercial organization.
Better Compression
7Zip offers a the highest compression ratio, which delivers compression results that are usually 30-50% better than standard ZIP.
Support multiple format
7Zip also supports 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB formats, so it can be used with all popular archive files as well.
Easy to use
7Zip offers a basic file explorer interface and also integrates into the Windows right-click menu. It can be associated with any of the supported formats and also offers commandline support.
http://www.7-zip.org/
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