Just making a note for myself based on the post Useful resources to improve the look and features of HTML Forms. Thanks to the author for the list:
- Niceforms - replace the most commonly used form elements with custom designed ones.
- Spry Validation Form Widget - uses Spry to implement easily validation features in your custom Forms.
- Customselect with icons - degradable select input replacement.
- JotForm - WYSIWYG form builder.