RFC 2015 defines a proposed Internet standard for sending PGP-encrypted email. This PGP/MIME has been incorporated into several MUAs such as Mutt and (with the AEGYPTEN project) KMail. However, a lot of email clients still don't support it. pgp-mime-handler can decrypt/verify such messages via a pipe, so it can be used as an email filter in many programs or scripts.
The EPPTT is a flexible, EPP-XML/Perl-driven TCP/IP client for testing EPP compliant servers. EPP-XML templates can easily be added to support the many different versions of the draft protocol as well as capture any extensions specific to a particular registry server. With the ability to quickly modify the template files, this client can service registry operators and users alike in testing with little to no programming experience. The EPPTT can be used standalone from the command line or from the Web. Interaction with the EPP-server can be logged and flagged as either passing or failing, based on expected responses, all of which are viewable from the Web client for quick and painless repetitive testing.
Date::Calc::XS is a Perl module that is the C/XS part which Date::Calc used to consist of. Date::Calc has become a (pure-Perl) wrapper which tries to load Date::Calc::XS, and failing that, loads Date::Calc::PP (a pure-Perl implementation which is now part of Date::Calc and used to be Date::Pcalc).
DBENGINE is a management system for using the database system PostgreSQL via browsers like Firefox. You can build multiple databases and configure and use them without logging into the server system. To use the databases, you only need a browser. The system gives you the ability to add own procedure for designing listings and input formulas. You can use binary large objects like any other type of field.
Config::Model::OpenSsh is a graphical configuration editor for OpenSSH configuration files (e.g. /etc/ssh/sshd_config, /etc/ssh/ssh_config, or ~/.ssh/config). Other user interfaces (curses and terminal) are also available. Programmers can choose to use the Perl API to modify or validate OpenSSH configuration. This program is based on Config::Model.
libguestfs is a set of tools for accessing and modifying virtual machine (VM) disk images. You can use this for viewing and editing files inside guests, scripting changes to VMs, monitoring disk used/free statistics, P2V, V2V, performing partial backups, cloning VMs, and much more. libguestfs can access nearly any type of filesystem including: all known types of Linux filesystem (ext2/3/4, XFS, btrfs, etc.), any Windows filesystem (VFAT and NTFS), any Mac OS X and BSD filesystems, LVM2 volumes, MBR and GPT disk partitions, raw disks, qcow2, CD and DVD ISO images, SD cards, and dozens more. libguestfs doesn't need root permissions.
libintl-perl is a library that supports message translation for Perl, written in pure Perl (version 5.004 or better). A faster C version is also built and installed if the system fulfills all requirements. Its interface is a superset of the gettext family of functions in C, and it uses the same file formats as GNU gettext, making it possible to use all tools available for gettext itself and to seamlessly integrate internationalized Perl code into mixed-language projects.