Does exists a tags field or something like tags in Mac OS for iPhone SDK?

I want to create a tags system for an iPhone app that let you type the tags names and appear like in som开发者_运维知识库e Mac OS software.

Like this:

http://www.leandroardissone.com/screenshots/tags-20100222-023617.png

Do you know if there's a way to do that? Or if there's a third party library for that?

Thank you!

Take a look at Three20 project that is derived from Facebook iPhone app. Under samples You can find pretty cool tags handling implementation.