jQuery.checkallbox

A jQuery plugin that *quite literally* checks all the boxes; apply it to a checkbox to bulk check/uncheck groups of checkboxes.

jQuery.selectimus

Selectimus jQuery plugin allows to replace standart selects in each browser by identical ones.

Data Validator Cabal

jQuery plugin for data and forms validation / Plugin jquery para validaciĆ³n de datos y formularios

jQuery noInput

A jQuery plugin for displaying inline labels similar to HTML 5’s placeholders, that lets you style the placeholder text.

jQuery Form Validation

jQuery plugin that validates forms with return callbacks