zcat:- gzip, gunzip, zcat - compress or expand files
zcmp:- zcmp, zdiff - compare compressed files
zdiff:- zcmp, zdiff - compare compressed files.
zdump:- zdump - timezone dumper.
zforce:- force a '.gz' extension on all gzip files
zgrep:- search possibly compressed files for a regular expression
zic:- timezone compiler
zip:- package and compress (archive) files
zipcloak:- encrypt entries in a zipfile
zipgrep:- search files in a ZIP archive for lines matching a pattern
zipinfo:- list detailed information about a ZIP archive
zipnote:- write the comments in zipfile to stdout, edit comments and rename files in zipfile
zipsplit:- split a zipfile into smaller zipfiles
zless:- file perusal filter for crt viewing of compressed text
zmore:- file perusal filter for crt viewing of compressed text
znew:- recompress .Z files to .gz files
zsoelim:- interpret .so requests in groff input.