Asymetrix Toolbook is an easy to use rapid application development environment for interactive applications. It is similar to HyperCard, but uses a book metaphor. ToolBook was targeted at novice programmers as well as experienced programmers that needed to create programs quickly. With ToolBook, programs are created visually, with a minimum of coding. Coding is done with OpenScript, a high-level object oriented language. It competed against other high level language environments such as Microsoft Visual Basic.