jQ Ideal Forms
Looking for an entire framework to design custom web forms? Then jQ Ideal Forms might work for you.
This feels much like the JCF library I mentioned earlier. However jQ Ideal Forms isn’t really an aesthetics library, but more of a functionality & validation library. It does change the style of form inputs but the real benefit is custom validation.
You can use the Ideal Forms plugin to check email addresses, dates, passwords, and duplicate field entries to make sure they match.
It supports custom keyboard shortcuts and even uses the jQuery UI calendar picker for date-based inputs(good for mobile too!)
An excellent choice for anyone who wants strong form validation with custom styles packed into one plugin.