Description=WinRAR is a powerful archiver and archive manager that cannot only open all popular compression formats but also features it's own.. 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 (ZIP,ARJ,CAB,TAR etc.) long filename support, programmable self-extracting archives (SFX), damaged archive repair, authenticity verification, embedded file comments, and encryption.