WinRAR is a powerful archive manager. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z file format files downloaded from Internet and create new archives in RAR and ZIP file format. It offers significantly improved compression ratios, easier use and a cheaper price as well as supporting long file names, disk spanning, and self-extracting file creation.