HyperCard was an application program created by Bill Atkinson for Apple Computer, Inc. that was among the first successful hypermedia systems before the World Wide Web. It combined database capabilities with a graphical, flexible, user-modifiable interface. HyperCard also featured HyperTalk, written by Dan Winkler, a powerful and easy-to-learn programming language for manipulating data and the user interface. HyperCard users often employed it as a programming system for Rapid Application Development of different kinds of applications, database and otherwise.