The Tcl extension provides a small but complete interface into libtcl and any other Tcl-based library for Perl programmers. It lets you create Tcl interpreters (as Perl 5 objects), bind in commands to them (either Perl subroutines or C functions dynamically loaded with the DynaLoader extension), and execute Tcl code in those interpreters.
ePerl interprets an ASCII file bristled with Perl 5 program statements by evaluating the Perl 5 code while passing through the plain ASCII data. It can operate in various ways: As a stand-alone Unix filter or integrated Perl 5 module for general file generation tasks and as a powerful Webserver scripting language for dynamic HTML page programming.
FormMagick is a set of Perl modules intended to ease the task of writing multi-page Web forms. It takes a description of the form (fields, validation to perform on each field, etc) in XML format and generates HTML on the fly. Other features include templates for changing the "look and feel" of your forms, and the ability to easily localise your text for other languages.
The satpass script provides satellite visibility predictions, given the position of the observer and the NORAD element sets for the desired satellites. It can acquire the NORAD element sets directly from any site supported by Astro::SpaceTrack. It can acquire the observer's latitude and longitude from http://geocoder.us/, look up star positions in the SIMBAD catalog, and more.
Chipcard::CTAPI is a Perl module for accessing chipcard terminals based on the standardized CTAPI library. It provides not only the CTAPI functions but also a complete set of convenience methods for easy reading and writing of memory cards. Chipcard::CTAPI comes with a couple of demo applications, including a tool to create encrypted file systems with randomly-created passwords which are then stored on a memory card.