WinRAR provides complete support for RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, XZ, Z archives.
WinZip can extract from all of the file types listed in the table that follows.
TAR - UNIX "Tape ARchive"
И не разбираюсь в школьной программе, в каком классе это должны проходить?