DevConverter converts your archives online. Amongst many others, we support ZIP, RAR, TAR.GZ and 7Z. No need to download any software like WinRAR or 7ZIP.
BZ is an open source data compressor that is created mostly in Linux and UNIX systems. It uses Burrows-Wheeler algorithm and gives a better compression than other ZIP files despite the long compression time. It is extracted using UNZIP and BZIP2. It also supports windows and MAC OS.