The deflate compressed data format as specified in RFC 1951 [ftp://ftp.isi.edu/in-notes/rfc1951.txt].
1
L: (GZ)
10622
GZ
gzip
A compressed data format that is compatible with the widely used GZIP utility as specified in RFC 1952 [ftp://ftp.isi.edu/in-notes/rfc1952.txt]
(uses the deflate algorithm).
1
L: (Z)
10624
Z
compress
Original UNIX compress algorithm and file format using the LZC algorithm (a variant of LZW). Patent encumbered and less efficient
than deflate.
1
L: (ZL)
10623
ZL
zlib
A compressed data format that also uses the deflate algorithm. Specified as RFC 1950 [ftp://ftp.isi.edu/in-notes/rfc1950.txt]