An online tool to test regular expressions. It allows a user to input a regular expression along with some text and displays the parts of the text that match the regular expression.

An useful ready reference - with informative tips - for those who use Perl regular expressions regularly.

Slides from a talk the author presented at TPC and YAPC. Covers the /o flag and re 'eval'.

One-page document containing tabulated summaries of common codes, modifiers, and special characters.

The Perl-module by Hakan Kjellerstrand composes a regex-expression from a list of words.