regex

Provides regular-expression handling for VB implementing UNIX-style regex syntax

Create, edit, and test regular expressions.

Used to find begin and end tags within HTML.

This regular expression matches a URL.

I recently saw a clever Ruby idiom to return the first regex match.

To experiment with (Perl-compatible) regular expressions interactively. Freeware

Scans multiple files looking for a REGEX pattern, and summarised what it finds.