double-keypress is a useful jQuery plugin which can be used to detect and handle Doube Keypress event in your webpage. Supports both keydown and keyup events.
inline-edit is a very small jQuery plugin which adds inline edit capability to existing html elements you specify. Works with both 'click' and 'mouseover' events.
Toggle Checkbox is a jQuery plugin used to beautify native checkboxes that allows you replace default check markers with your own design (e.g. text or icons.).