Adobe Flash

Flash is an application previously owned by Macromedia Inc., but became the property of Adobe when Macromedia was bought. It is powerful tool for creating online content and games, which has lead to the creation of sites such as Newgrounds which are devoted entirely to games created with Flash. The main downside to Flash is that it has a large learning curve and requires expensive software. However, to access Flash content, all that is needed is the free Flash player, which in turn has made Flash very popular.