RAR versus ZIP? ZIP versus RAR? WinRAR has several advantages over WinZIP. In most cases WinRAR is able to compress files better, so the file size of the archive that WinRAR creates is lower.
WinRAR can create both RAR and ZIP files, whereas WinZIP can only create the latter. The RAR format has other advantages, such as better support for creating spanned archives (split up an archive into several pieces). This is great when you need several CDs or DVDs to transfer large files to another computer, for example.
Finally WinRAR has several advanced features such as Unicode-filename support, self-extracting archives, AES-based password protection and more.