Below are some open source projects that I have written in the past. Keep in mind that most of these are no longer maintained but if they are useful to you, feel free to use them as you see fit. Enjoy!
Illudium PU-36 Code Generator
This project generates ColdFusion components (i.e. bean, DAO, gateway, service), ColdSpring? XML, Transfer XML, and ActionScript? Value-Objects using the admin api and database introspection. The front-end is built in Flex 2. The code outputted for easily pasting or saving into a project to allow you to get a head-start on some of the grunt work of doing OO in CF. It uses XSL to generate the components and is designed to allow you to easily add to or modify the generated code. You can even create new templates that can be swapped out at run-time.
Sortable Tables Custom Tag
Breeze/Connect XML API Component
This set of CFCs implements 27 of the functions laid out in the Breze 5 XML API spec, specifically those relating to reporting. For details on how to utlize this component, view this blog post.
Allows you to easily read and output RSS feeds in ColdFusion. Basically, all you need to do is supply a URL when you initialize the component.