WinRAR is a 32-bit Windows version of RAR Archiver, the powerful archiver and archive manager. RAR files can usually compress content 8 to 15 percent more than ZIP or ARJ files. WinRAR's main features are 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.