Pop is an open source javascript plugin for jQuery to make dropdown menus. Pop controls a main container and show / hide that container using some simple javascript. You can put anything in the container to control it using Pop!

it just requires some lines of code to be operated. You will like less code and effective performance of that Open Source Free Dropdown Menu.

Demo and Download Instructions: http://pop.seaofclouds.com/

MenuMatic takes a sematic ordered or unordered list of links and uses MooTools 1.2 to turn it into a dynamic drop down menu system (horizontal or vertical), with enhanced usability and flair.

For users without javascript, it falls back on a CSS menu system based on Matthew Carroll’s keyboard accessible flavor of Suckerfish Dropdowns.

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CSS Drop-Down Menu Framework is a free & cross-browser solution to create good looking menus.

Download package already contains examples but new themes can be created very easily.

Menus can be transformed by only changing the class name. Available transformations are:

• horizontal
• vertical left-to-right
• vertical right-to-left
• horizontal linear
• horizontal upwards.

The framework normally uses only CSS but for IE6, there is a JavaScript file that must be included.