WinRAR 4.00 beta 1

WinRAR is a powerful archive manager. RAR files can usually compress content
by 8 percent to 15 percent more than ZIP files can. WinRAR is a powerful
compression tool with many integrated additional functions to help you organize
 your compressed archives. It can backup your data and reduce size of email
attachments, decompress RAR, ZIP and other files downloaded from Internet and
create new archives in RAR and ZIP file format.