SWiSH is a program that is used to create Flash animations without using Macromedia's Flash product. SWiSH includes tools for creating lines, rectangles, ellipses, curves, motion paths, rollover buttons, and more. Once the animation is created, it is exported into the SWF format used by Flash so that it can be viewed by anyone who has Flash Player. SWiSH is a WYSIWYG program, which means you see the animations exactly as they will appear in the Flash Player. The development of SWiSH was possible because of Macromedia's decision to make Flash an open source program, enabling SWiSH to be built on Macromedia's code.
Web users can download Flash Player to view SWiSH content, which performs across multiple browsers and platforms. According to an independent study cited by Macromedia, 89.9 percent of Web users already have Flash Player installed.