WinRAR is a shareware file archiver and data compression utility developed by Eugene Roshal and distributed by Alexander Roshal,[3] first released in autumn of 1993.[4] It uses the RAR archive file format, proprietary to its developer, and can also create archives in the ZIP format. [5] WinRAR runs under Microsoft Windows in GUI mode; there are command-line versions, called "RAR", for Mac OS X, Linux, FreeBSD, Windows console mode, and MS-DOS.
From version 5, a new archive format, RAR5, is supported, incompatible with the previous one, but also using file extension.RAR.[6] With the introduction of RAR5, the older format is referred to as RAR4. The new version can open and create RAR4 archives, but older versions do not support RAR5 archives.
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