SweetDropdown is a jQuery plugin to create dropdowns in any direction with any kind of content.
Bootstrap Dropdown Slidemorph Menu inspired by Youtube context menus within a video player. Transitions between submenus create very neat experience. Also, menu provides information about selected values for each item.
vDrop is a minimalistic and customisable jQuery plugin to replace standard HTML select dropdowns.
Pretty Dropdowns is a simple, lightweight jQuery plugin that converts
<select> drop-down menus into "pretty" menus that you can style using CSS. As an extra bonus, it does its best to keep the menu options within the viewport.
A morphing dropdown that animates according to the size of its content by using css and jQuery as seen on stripe.com website.
A tutorial about creating card deck style dropdown by using CSS3 transitions and jQuery.
Combodate is a jQuery plugin to create dropdown date and time picker. This plugin converts
<input type="text"> into dropdown elements to pick day, month, year, hour, minutes and seconds.
Dependent Dropdown is a jQuery plugin that enables to add and control multi level dependent dropdown lists. It works both with normal select options and select with optgroups as well.
Nice Select is a lightweight jQuery plugin that replaces native select elements with customizable dropdowns.
Dropit is a jQuery plugin for single level dropdown menu's. Just simple and flexible dropdown's in jQuery.
A simple solution with jQuery to solve problems on long drop down menus. This technique is when you scroll down, the menu actually moved too.
Bootstrap Dropdown Hover is a simple plugin which opens Bootstrap dropdown menus on mouse hover, the proper way.
Bootstrap Dropselect is a simple jQuery plugin that extends bootstrap's dropdown menu into something like github's select menu.