regex(1) - phpMan

fail2ban-regex (1)   - test Fail2ban "failregex" option
Mail::SpamAssassin::Plugin::MIMEHeader (3pm) - perform regexp tests against M...
Mail::SpamAssassin::Plugin::Rule2XSBody (3pm) - speed up SpamAssassin by comp...
re_comp (3)          - BSD regex functions
re_exec (3)          - BSD regex functions
regcomp (3)          - POSIX regex functions
regerror (3)         - POSIX regex functions
regex (3)            - POSIX regex functions
regex (7)            - POSIX.2 regular expressions
regex.h (0p)         - regular expression matching types
regexec (3)          - POSIX regex functions
regcomp (3p)         - regular expression matching
regexp_table (5)     - format of Postfix regular expression tables
regfree (3)          - POSIX regex functions
Tie::Hash::NamedCapture (3pm) - Named regexp capture buffers