David Coppit

Yagg software creates a C++ program to generate all strings of a specified length from input files similar to YACC and LEX.

Mail::Mbox::MessageParser is a speedy mbox parser that utilizes one of three strategies, including high-performing Perl, cached folder information, or GNU grep to parse mailbox content. Despite being feature-poor, it is fast and efficient.

Grepmail is a software tool used for searching emails within a compressed or normal mailbox using a date constraint or regular expression.