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WinRAR is a trialware file archiver utility, developed by Eugene Roshal of win.rar GmbH. It can create and view archives in RAR or ZIP file formats, [ 6 ] and unpack numerous archive file formats. To enable the user to test the integrity of archives, WinRAR embeds CRC32 or BLAKE2 checksums for each file in each archive.
The license permits its use to produce software capable of unpacking, but not creating, RAR archives, without having to pay a fee. It is not a free software license. 7-Zip, a free and open-source program, starting from 7-Zip version 15.06 beta [11] can unpack RAR5 archives, using the RARLAB unrar code.
[citation needed] WinRAR is a notable example of an unlimited trialware, i.e. a program that retains its full functionality even after the trial period has ended. The rationale behind trialware is to give potential users the opportunity to try out the program to judge its usefulness before purchasing a license.
This source-available freeware [1] is a command-line version of UnRAR, released by RARLAB, the same company that released the proprietary WinRAR software. [2] This software can extract newer RAR v5.0 file archives that has limited support in free extractors.
Eugene Roshal (Russian: Евгений Лазаревич Рошал, romanized: Yevgeniy Lazarevich Roshal; born 1972) is a Russian software engineer best known for developing the RAR file format, the WinRAR archiver, and the FAR file manager.
A software license is a legal instrument governing the use or redistribution of software. Since the 1970s, software copyright has been recognized in the United States. Despite the copyright being recognized, most companies prefer to sell licenses rather than copies of the software because it enables them to enforce stricter terms on redistribution.