Adobe Flash
Adobe Flash (formerly SmartSketch FutureSplash, FutureSplash Animator and Macromedia Flash) is a multimedia platform used to add animation, video, and interactivity to web pages. Flash is frequently used for advertisements and games. More recently, it has been positioned as a tool for "Rich Internet Applications" ("RIAs").
It is a media type similar to images, video, and audio. This is not the same as Flash-based video (FLV) which is handled by a video object.
Flash is very common on desktop computers, though it may be blocked by utilities such as ClickToFlash and it does not function on iOS - iPhone, iPad.