Zero RRD Framework provides a central HTTP-based service for importing into standard RRD databases and for generating graphs. A lightweight, easily extendable agent for the data sources pushes updates with minimal resource consumption to the master service using HTTP. With the introduction of VMs for the service, it's easy to test-drive the application and even the architecture (connecting agents to the service in the VM).
OOPS is a system for making Perl objects transparently persistent. It handles deeply nested and cross-linked objects, and even object hierarchies that are too large to fit in memory and (with a hint) individual hash tables that are too large for memory. Objects are demand-loaded into memory as they are accessed, and all changes are saved with a single commit().
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.
UnixODBC.pm provides Perl programs with a subset of the X/Open ODBC API for use with EasySoft's unixODBC DBMS libraries, as well as a peer to peer API for querying ODBC data sources on networked systems. In addition, it provides peer client and server scripts and configuration files, sample clients that perform ODBC queries on local and networked systems, result set output for RSS feeds, and two multi-host data managers: one that uses Apache and CGI to provide a Web browser interface, and another that uses Perl/Tk.
Gtk2::Ex::DBI is a Perl module that is used in conjunction with Gtk2::Perl and Gtk2::GladeXML to give data-aware "form" functionality. The programmer creates a database form with Glade2, and then creates a Gtk2::Ex::DBI object, which then "binds" a DBI data source to the form, managing querying, navigating records, applying updates to the database, and error handling.
dbMan is a complex SQL monitor for common database systems (PgSQL, Oracle, MySQL etc.). It's based on Perl and DBI interfaces. Features include a command history buffer, tab completion, editing Oracle objects, simultaneous connections, SQL help, importing and exporting of tables, Oracle explain plan, and more. dbMan is made as a simple kernel and many extension modules, and you can make your modules with a simple HOWTO.