ctrlxmms is a small Perl script designed to increase the useability of XMMS. With it, you can use most of the common GUI functions of XMMS from the CLI. You also have a few handy commands which are not available from the GUI. Together with lirc and a remote (eg. Anir Multimedia Magic), this is a wonderful tool.
DBMEdit is a web-based DBM database editor (in Perl 5). If you use DBM files and don't have a simple way to edit them, you'll want this. It treats each element in the DBM as several fields joined by a delimiter, in effect supporting multiple columns within the single-column DBM format. DBMEdit displays your DBM database as a table, and provides auto-sized forms to add or edit records. Multi- user access is safe.
DB_Browser is a CGI tool for developers working with any relational database supported by Perl::DBI. It easily facilitates searching, editing, and adding to tables within a database. While it can be used as a regular interface to database data itself, it works well as a supplemental tool for developers creating their own primary interface.