gzip (1)             - compress or expand files
IO::Compress::Gzip (3pm) - Write RFC 1952 files/buffers
IO::Uncompress::AnyInflate (3pm) - Uncompress zlib-based (zip, gzip) file/buffer
IO::Uncompress::AnyUncompress (3pm) - Uncompress gzip, zip, bzip2 or lzop fil...
MIME::Decoder::Gzip64 (3pm) - decode a "base64" gzip stream
zforce (1)           - force a '.gz' extension on all gzip files