You could have downloaded Nova Dropdown Menu 1.0 for Mac from our application library for free. This Mac application was originally developed by FlashDevelopment24.com. The application lies within Developer Tools, more precisely Webmaster Tools.
From the developer:
Nova Dropdown Menu provides different menu items. Multiple columns and separators for sub-elements to group them. Add sub-link items, titles and sub-titles to each item or group, or add even HTML panel where you can put any HTML code or image. Use them all in order to create truly unique navigation! Component is fully browser compatible.
You may want to check out more Mac applications, such as Nova Golf Lite, CSS3 Menu or Short Menu, which might be related to Nova Dropdown Menu.
Web Development