Projects I've taken part in (which, for one reason or another, cannot be displayed) include:

Band Management System
PHP/mySQL/Perl
Program used to store dates, gigs, rehearsals for multiple bands, which may or may not have overlapping members.

Data Download and Import Scripts
Perl/Shell Scripting/mySQL
Related to above project - creating download programs to retrieve data from processors for daily sales, then creating import program to store the data in a manner that makes it simple to compare to processor's reports, but comparable to the format of data from other processors.

Database Monitoring system
Perl/mySQL
Due to the high-volume of traffic at various times, and the large queries used by some reports, I built a program to monitor a server's database in order to help avoid queries locking up the table and creating a huge backlog of queries waiting to execute.

Dynamic Content Management System
PHP/mySQL/Perl
Dynamic spreadsheet program, built to allow users to manage any type of records they desire. Gives ability for users to add/m odify/drop fields (which can be a single value, or a stored record with multiple fields within itself) and set specific field types (eg. Email address, URL, text field, text box, etc).

Member Retention Analysis program
Perl/Shell Scripting/mySQL
Program to search out new members for a given month, then analysis of renewals in following months. Tool is then used for estimations for future.

Ping Report
Perl/mySQL
Program to ping a hosting server's Domains daily in order to make sure all sites can be reached (a backup used incase any domains are accidently not renewed).

Updating company's legacy sign-up system
Perl/PHP
Adding multiple processors, formatting data sent through new processors in order to receive processor data in a meaningful and consistent manner with the existing system. Adding user-redirection based on country submitted through form and country detected by IP.