"[Castle is] a collection of many different tools and features primarily designed for easing development and reducing development time," said Kevin Williams, who is a developer involved in Castle.

Ease of use and intuitiveness are the primary draws of Castle, Williams said.

"Of all the software that I've used over the years in .Net, I've never seen anything as easy to use or powerful as the Castle tools," Williams said.

"It's very intuitive to use and you have a lot of control over things and it's very extensible," Williams said. Users can mold Castle to their environment or use it with the Visual Studio IDE.

"Probably the best thing I can say is that as developers improve their practices and learn about new methodologies and techniques and design patterns and all these things, sometimes it's difficult to put all these tool together and make it work," Williams said. "Castle fits all those pieces together for you and gives you a jumpstart in what you want to build."