pliant – Extensible and flexible validation.
Michael Gunderson
A flexible forms validation plugin, that's easily extensible via plugins.
tom bertrand
jQuery plugin that provides a client site form validation with builtin options and deep customization.
Nguyen Huu Phuoc
The best jQuery plugin to validate form fields. Designed to use with Bootstrap 3
Rafael Lyra <rafael@rafaellyra.com>
Identify typed credit cards easy and light
Jörn Zaefferer
Form validation made easy. Validate a simple comment form with inline rules, or a complex signup form with powerful remote checks.
jQuery Foundation and other contributors
A JQuery Plugin for Inputs with Parameters
Rafael Maruta
jQuery Plugin to validate some basic types of data input
Rafael Maruta
jQuery Plugin to order a range of dates or validate if any date is larger than the other