Flash is a Macromedia product. It enchances the user experience by providing rich animations which can make your pages look very classy. Flash can be categorized in the following ways -

Flash Animation – Simple moving pictures to beautiful complex animations can be created with flash.

Flash Games – Small games to large ones, flash provides a very cool user interface alongwith a rich user experience.

Flash Videos – Flash videos are light and faster to load on the internet allowing a lot of flexibility. Even youtube uses them.

FLEX – This is latest in Flash development. Flex/Actionscript has opened doors to a whole new work of flash development.