It may be obvious, but many of these utilites are themselves compressed into the ZIP format so they assume that you already have a ZIP decoding utility.

ARC - .arc Decoder

ARJ - .arj Decoder

CMP-UMP - Unix .Z Decoder

UNSIT - Macintosh .sit Decoder

BINHEX - Macintosh .hqx Encoder/Decoder

EXT-PC - Misc. Macintosh Decoders

UUDO - uuencode .uue Encoder/Decoder

UDEC - .uue/mime/.hqx Decoder

GZIP - GnuZip .gz Decoder

LHA - .lha/.lhz Decoder

PKZIP - .zip Decoder

TAR - .tar Decoder

UNPAKIT - .pit Decoder

ZOO - .zoo Decoder