RARLAB : Winrar

WinRAR is a 32-bit Windows version of RAR Archiver, the powerful archiver and archive manager.
RAR files can usually compress content 8 to 30 percent better than ZIP files. WinRAR's main features are very strong general and multimedia compression, processing of non-RAR archives, long filename support, programmable self-extracting archives (SFX), damaged archive repair, authenticity verification, embedded file comments, and encryption.

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