PPI allows you to parse, analyze, and manipulate Perl (without Perl). It provides a Perl parse that is the basis of tools like Perl::Critic and Perl::MinimumVersion.
perlver (Perl::MinimumVersion) takes Perl source code and calculates the minimum version of Perl required to be able to run it. Both explicit dependencies and implicit are shown.
A shell library intended for Unix sysadmins.
A PHP class for modifying Zip archives without extensions or temporary files.