The compression utility WinRAR is an archive manager with support for packing RAR and ZIP archives and unpacking RAR, ZIP, ZIP64, 7Z (7-Zip), CAB, ARJ, LZH (Lempel-Ziv-Huffman), TAR, GZ, ACE, UUE, BZ2, JAR (Java Archive developed by Sun Microsystems) and ISO (ISO9660) archives. You may use it to backup your data, reduce the size of email attachments, decompress files downloaded from the Internet and create your own file archives.