ePerl interprets an ASCII file that contains Perl program statements by replacing any Perl code it finds with the result of evaluating that code (which may be chunks of HTML, or could be nothing) and passing through the plain ASCII text untouched. It can be used in various ways: as a standalone Unix filter or as an integrated Perl module for general file-generation tasks and as a powerful web-server scripting language for dynamic HTML page programming.

Available from CPAN. See the module manpage for more information.