The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses.
Simply pre-fills form inputs based on JSON data passed in, or it can find the correct form and fields to autofill.
Easy to use and understand captcha implementation for jQuery
jQuery plugin to create an easy-to-use FAQ user interface
Simple file preview UI
jQuery plugin to live-filter an input element given a datatset
Simple image replacement for checkboxes and radio buttons
Simple password strength checker and UI
A Node module for retrieving a 'fuzzy' weather forecast (words, not data) powered by Dark Sky