A file archiver is a computer program that combines a number of files together into one archive file, or a series of archive files, for easier transportation or storage. Many file archivers employ Archive formats that provide lossless data compression to reduce the size of the archive which is often useful for transferring a large number of individual files over a high latency network like the Internet.
The most basic archivers just take a list of files and concatenate their contents sequentially into the archive. In addition the archive must also contain some information about at least the names and lengths of the originals, so that proper reconstruction is possible. Most archivers also store metadata about a file that the operating system provides, such as timestamps, ownership and access control.
The process of making an archive file is called archiving or packing. Reconstructing the original files from the archive is termed unarchiving, unpacking or extracting.
Several programs can create self-extracting archives. For Windows there is WinZip, WinRAR, 7-Zip, and the built-in IExpress Wizard. For Macintosh there is StuffIt, The Unarchiver, and 7zX. There are also programs that create self-extracting archives on Unix as shell scripts. An early example of a self-extracting archive was the Unix shar archive, in which one or more text files were combined into a shell script that when executed recreated the original files.
WinRAR x86 (32 bit) 5.21 Beta 1
WinRAR x64 (64 bit) 5.21 Beta 1
7-Zip x86 (32 bit) 9.38 Beta
7-Zip x64 (64 bit) 9.38 Beta
ZipGenius 188.8.131.5212 Standard
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