Moving along, we all have file archiving needs. One of the top applications, 7-zip, is available as a portable release. 7-zip can pack zip, 7z, tar, bzip2, gzip and can unpack rar, cab, iso, arj, lzh, chm, z, cpio, rpm, deb and nsis files. I do not think that any format is left behind (of course, for all practical purposes.)