The Macintosh has become an important hypertext platform, because of the introduction of OWL's Guide in 1986 and even more because of the introduction of HyperCard in 1987. Since then the Macintosh has evolved to a true multimedia platform. Apple developed its own standard for video-like applications, called QuickTime. The Macintosh has also been the platform on which the influential Intermedia system was built, albeit under the A/UX Unix operating system. More recently, Mark Bernstein's company Eastgate Systems has started pushing Storyspace for the Macintosh. Quite a few interesting hyperdocuments are commercially available for Storyspace, including fiction and non-fiction.