aubng is a Usenet binary decoder implemented entirely in Perl5. It has a boatload of features, including: decoding of uuencoded and Base64 postings, assembling multi-part postings, remembering already seen binaries in a newsrc file, saving metadata about news postings, smart renaming of binaries with the same name, removal of duplicate binaries, and easy XML-based configuration. Aubng also features an extensible handler architecture, so it is easy to add your own features.
ColdSync is a portable synchronization tool for Palm devices (PalmPilot, Handspring Visor, etc.) that runs under *BSD, Solaris, Digital Unix/Tru64, Linux, AIX, and Windows NT. It supports PalmOS 2.0 (original PalmPilot) and later. It is only known to support Visor syncing under FreeBSD and Linux, however. It supports IR syncing under Linux. ColdSync can back up, restore, install, and synchronize database, and can be extended and customized through the use of conduits. ColdSync is rather paranoid and takes pains not to delete anything it isn't 100% sure about.
drsync is a Perl wrapper for rsync which keeps track of the filelist between synchronizations. If you delete a file in one place, it will delete it in the other place; if you add a file, it copies to the other place. It is ideal for notebook users who want to keep data in two (or more) different places. It is also good for the Linux PDAs (Agenda, iPAQ, Yopi, etc.), to keep data synchronized with the desktop. The requirements are designed to be minimum.
DXSpider is a Ham Radio program that connects to other similar programs by radio or the internet and provides a real-time information service to Ham Radio operators rather like IRC. It is designed to become a complete replacement for the original DOS implementation written by Dick Newell AK1A.
email2sms is a filter written in Perl which converts an e-mail into a form suitable for sending as an SMS message. Its main advantage over the alternatives is that it uses the CPAN module Lingua::EN::Squeeze to compress the text down to as little as 40% of its original size, so you can get much more of your e-mail into the 160 character limit imposed by SMS. It is fully MIME compatible, and has many configurable options, including removal of quoted text. Ideal for use with procmail. A Perl script for sending the output to a typical e-mail to SMS web gateway is included.
fmscore is a Perl5 program which uses the Mail::Freshmeat Perl module to parse freshmeat daily e-mail newsletters, and then rank them by interest according to highly flexible user-supplied ranking rules. Articles below a specified score will be removed from the output. fmscore is intended/suitable for use as a procmail filter.
MailWatch is a program for analyzing mail traffic. As each message is received, Mailwatch records summary information about it. Later, it can generate a textual report, showing the number of posts during a time period, who the most prolific posters were, and what the most popular topics were. It is targeted at the end user who wishes to generate statistics for personal email or mailing lists.
mptc is a Perl script to help you work out whether you're on the cheapest mobile phone network/tariff for your phoning habits. You feed it an itemised phone bill and tariff pricing information, and it will tell you how much that bill would have cost on different tariffs. So far it only supports UK network pricing systems, but could easily be extended and applied in other countries.