Shockwave was a brand that macromedia had. It was used to describe the web viewers and players they had for all their software. There was Shockwave Flash (SWF ring a bell?), Shockwave Director, and Shockwave Freehand. The branding was understandably confusing and they simplified it later to just Shockwave player (the browser plugin to view content created in Director) and Flash player (the browser plugin to view content created in Flash). The Freehand plugin died quickly; it was replaced with the ability to export Freehand documents to SWF (flash) directly.