ChordDB is a Web-based database front-end for keeping track of and typesetting chord files (a.k.a. guitar fake sheets). It accepts chord and chordpro files as inputs, and creates output sets in a large variety of formats (PDF, text, chordpro, LaTeX) with the help of pdftex and the LaTeX Songbook style. Songs are stored internally using SQLite, so there is very little need for configuration.
CodeKit is an interface to a universal database code table. It takes all of the programming work out of maintaining multiple database code definition sets. A single code administration page lets you define new virtual code tables and enter all codes and their descriptions. Perl and PHP classes retrieve the code descriptions and automatically generate HTML code selection elements.
Copper is the feature-wise Linux port of the Windows-only software Golden32 by Benthic. It allows developers to view data in a table format rather than in SQLplus, and lets you do select, insert, update, delete, commit, and rollback. It supports Oracle and MySql, and features a tabbed view to manager your queries, syntax highlighting, right-click updates, and a table/column browser.
Cruddy! is an instant CRUD Web front-end, featuring auto-discovery of the data dictionary. It is similar to phpMyAdmin in the plug-and-play manner, but much more user-friendly for staff and clients with access restrictions. Unlike phpMyAdmin, Cruddy!'s underlying CGI::CRUD is a full object-oriented webapp development framework. Currently, Oracle and MySQL RDBMS are supported. Cruddy! is stable and used in several production sites around the world including ValueClick, Inc.