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.
Test.pm to Test::More Converter is a Perl script to convert Perl programs from the old and no longer recommended Test.pm to the more modern Test::More. It still has some limitations.
A text editor aimed at developers.
A Java library for accessing USB devices.