MultiStepForm.js is a multi step form with jQuery validation.
Smart Wizard is a flexible and heavily customizable jQuery step wizard plugin with Bootstrap support. It is easy to implement and gives a neat and stylish interface for your forms, checkout screen, registration steps etc.
jQuery-steps is a lightweight yet customizable jQuery plugin that converts any grouped elements into a step-by-step wizard with navigation buttons and callback functions.
A tutorial about creating Multi Step Form with Progress Bar using jQuery and CSS3. You can change your classic long forms into smaller logical sections and convert it into a multi-step form with a cool progress bar. Could work for lengthy processes like registration, checkout, profile fillups, 2-factor authentication logins, etc.