I've been a big fan of the CFUniform ColdFusion Form Library for a long time. Using it helps me build better applications quicker. Matt Quackenbush has just released a major update to the library with some really compelling features.
Firstly, CFUniform is much more Ajax capable and plays even nicer in your Ajax application.
Secondly, there are several new types, like CAPTCHA and Rating.
Thirdly, there is much improved support for global configuration.
All of this leads to a more flexible and powerful form library to power your forms.
Take a look at the CFUniform 4.0 Release Article and find out more details.