FORM Validators for web developers

1. Live Validation form

LiveValidation is a small open source javascript library for making client-side validation quick, easy, and powerful.

Example Demo

http://livevalidation.com/examples




2. MooTools FormCheck

FormCheck is a class that allows you to perform different tests on form to validate them before submission.


Demo

http://mootools.floor.ch/en/labs/




3. ProtoForm

ProtoForm is an unltra lightweight, unobtrusive cross-browser and very easy to customize form validation + submit with Ajax based on prototype.js framework.

Demo

http://cssrevolt.com/upload/files/protoform/