7-Zip has a high compression ratio in new 7z format with LZMA compression. supported formats Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR; Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, MSI, WIM, Z, CPIO, RPM, DEB and NSIS. For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 better than ratio provided by PKZip and WinZip. Self-extracting capability for 7z format. Integration with Windows Shell. File Manager, and command line version.
WinZip is a file compression utility for Windows that allows you to reduce the size of large files, and archive different files into one big file.
Traditionally the first choice when it comes to compressing and uncompressing files, WinZip is one of the most popular downloads of all time. Despite the fact that its competitors have caught up somewhat, it remains a simple way to archive programs and reduce file sizes.
Much of WinZip's success has been down to its simplicity. From the outset, the program prompts you to choose between Classic mode and Wizard mode. The wizard is great for beginners, although even the classic interface is easily negotiated, giving you instant access to a range of features such as compression ratios, password-protection and a Favorites list.
While archiving files in WinZip is quick and easy, you can't help but thinking that the program has lost some ground on its competitors. For instance, the compression rates aren’t as high as they are in WinRAR, and you can only save files in Zip format rather than RAR, ISO or JAR.
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