Do you have a file that needs to be "zipped" or "unzipped"? That's the job of 7 Zip. And 7 Zip Portable is exactly as the name states, a portable version of the original 7 Zip that is small enough to take anywhere (think USA) and used on a variety of smaller devices like your tablet.
7 Zip is a file archiver that was originally designed for Windows. 7-Zip mostly uses the 7z format but it can also read and write to several different formats. The first version of 7Zip was originally released in year 1999.
It’s easy for Windows users to forget that WinZip isn’t the only file-compression utility in the world. Like its better-known competitors, the free 7-Zip unpacks a host of archive formats, including ZIP, TAR, GZ, and its own 7z format. Unlike WinZip, though, it can create TAR and GZ archives, which are commonly used on Unix and Linux systems.
The program’s ability to shrink files was stunning. In our tests, 7z archives were up to 40 percent smaller then their ZIP equivalents, although compression did take longer, and the highest compression settings can hog system resources. Advanced options include the ability to create solid and self-extracting archives, and to adjust the compression level and password protection. The program also has a command line module. Though the main interface is overly simple and looks like it was designed for Windows 95, it’s not hard to use and fairly self-explanatory. The context menu options, which include “testing” an archive, indicate that 7-Zip should be taken seriously.
7-Zip is fine for casual users with a bit of computer savvy, but it’s especially well-suited for developers and anyone else who moves between the Windows and Linux/Unix worlds.
7-Zip works in Windows 7 / Vista / XP / 2008 / 2003 / 2000 / NT / ME / 98. There is a port of the command line version to Linux/Unix.
We’ve all heard of WinRar and WinZip but unlike those programs, 7-Zip is completely free and does not require registration. Zip and unzip files with 256-bit encryption, 7-Zip can do it all unlike the other software and all that 100% free. There is even a portable version of the program available.
7-Zip supports numerous features such as: self-extracting capabilities, a command line version, plugins for FAR manager, integration with Shell, excellent AES-256 encryption, multiple core threading and much more…
7-Zip supports 256-bit AES cipher encryption which can be enable for both, file and the directory. When the directory of the archive is encrypted, users are required to enter a password in order to see the file names in the archive.
7-Zip is packed full of features, it can zip, unzip and backup files. All that with speeds up to 1MB per second during compression and 20MB per second during decompression which makes it the best existing archiving tool.
7-Zip can unpack almost all of the popular formats such as: 7z, Zip, RAR, GZIP, TAR, ISO, GZ, ARJ, BZIP2, CAB, CHM, CPIO, DEB, DMG, HFS, LZH, LZMA, MSI, NSIS, RPM, UDF, XAR and WIM.