When is an extremely simple personal calendar program, aimed at the Unix geek who wants something minimalistic. It can keep track of things you need to do on particular dates. It's a very short and simple program, so you can easily tinker with it yourself. It doesn't depend on any libraries, so it's easy to install. You should be able to install it on any system where Perl is available, even if you don't have privileges for installing libraries. Its file format is a simple text file, which you can edit in your favorite editor.
The CentralNic Toolkit is CentralNic's system for instantaneous Registry-Registrar Communications. Registrars can use this system to register and modify CentralNic domain names in real time, with no delays for human intervention or e-mail processing. The Toolkit also provides advanced and efficient methods for searching for and querying domain names and whois records, and retrieving account information.
LaTeX::Table is a Perl module that provides functionality for an intuitive generation of LaTeX tables. It ships with some predefined, good-looking table styles. This module supports multi-page tables via the xtab and longtable LaTeX packages. For publication quality tables, it utilizes the booktabs package. It also supports the tabularx and tabulary packages for nicer fixed-width tables. Furthermore, it supports the colortbl package for colored tables optimized for presentations. The ltpretty program makes it easy to use this module from within a text editor such as Vim or emacs.
txt2html is a Perl program that uses the HTML::TextToHTML perl module to convert plain text to HTML. It supports headings, lists, tables, simple character markup, hyperlinking and is highly customizable. It recognizes some of the apparent structure of the source document (mostly whitespace and typographic layout) and attempts to mark that structure explicitly using HTML.
HTML::Mason is a full-featured web site development and delivery system. Mason allows web pages and sites to be constructed from shared, reusable building blocks called components. Components contain a mix of Perl and HTML, and can call each other and pass values back and forth like subroutines. Components increase modularity and eliminate repetitive work. HTML::Mason is most powerful when used in conjunction with mod_perl, but can be used in standalone applications as well.
OpenGuides is a wiki-like package for maintaining a collaborative city guide. It is written in Perl and runs as a CGI program, and uses either the MySQL, PostgreSQL, or SQLite database. It offers features over a "normal" wiki such as metadata management and a "find nearby things" function. The look and feel is highly customizable thanks to use of the Template Toolkit.
mysqldiff is a Perl script which compares the data structures (i.e. table definitions) of two MySQL databases and returns the differences as a sequence of MySQL commands suitable for piping into mysql which will transform the structure of the first database to be identical to that of the second (c.f. diff and patch). Database structures can be compared whether they are files containing table definitions or existing databases, local or remote.