Custom Drupal Modules

I have created several custom Drupal modules that accomplish various tasks. I am going to attempt to describe them without giving up too much confidential info :) All the modules I have made have contained tons of different languages, including: HTML, CSS, Javascript, PHP, MySQL, and jQuery. Unfortunately my modules are all custom made for specific sites so I can't really make them into "real" modules and submit them to Drupal, but they are worth talking about:

Database Sync Module:
I wish I could go into detail on how this module works without giving aways sensitive information but basically what happens is a customer maintains an independent database offline containing data that they would like to update on a regular basis on their website. What my module does is take a CSV dump of the customer's database and sync's the website's database automatically to eliminate having to update the website at all.

Image Updater Module:
I created a module that runs on cron and checks out a custom table of mine for updated images and re-populates the entire site to reflect the correct logos.

Custom Price Module:
I also created a module that takes a price calculated through a custom form and passes it to ubercart and dynamically updates the price of an item. For this one I looked endlessly for a solution thinking that at some point somebody must have tried to do that with ubercart, but I couldn't find anything so I decided sometimes you just have to do it yourself.

Link Fixing Module:
This module just goes through a database and checks to see if any of the links don't start with "http://" and if they don't, it adds them and updates the entire site's database.