addClassWhenEmail is a jQuery plugin to hide the submit button by default and only show it if user enters the correct email address.
International Telephone Input is a jQuery plugin for entering and validating international telephone numbers. It adds a flag dropdown to any input, which lists all the countries and their international dial codes next to their flags.
Flexselect is a jQuery plugin that turns regular select boxes into Quicksilver-like, flex-matching, incremental-finding controls.
Fort.js is a modern progress bar for form completion. All you do is add the form and Fort.js algorithm will take care of the rest.
Autocompleter is a simple, easy, customisable autocomplete plugin with cache support (one more alternative).
NumBox jQuery Plugin helps ensure that a numeric keyboard will pop-up on mobile devices when a number is entered. It offers real-time validation as you type plus display formatting for mobile devices and desktop browsers, is designed for HTML5's
input type="number" elements, and provides a number of customization options.
Select or Die is a jQuery plugin to style/replace
ClockPicker is a clock-style timepicker for Bootstrap (or jQuery).
Labelmask is a way to create accessible input hinting without using input masks.
Labelmask inserts formatting hinting after the label, and updates as the user inputs their information. When the user leaves the field the formatting gets applied to the input value itself.
JSAjaxFileUploader is a jQuery Plugin with ease of use. Fully customizable with many options. You can have multiple upload forms in a same web page at the same time and user can also select multiple files for upload.
Add Clear is a jQuery plugin that adds a input clearing button on any input you apply it to. It clears the value, and returns focus to that field.