ToolBook was a Microsoft Windows based e-learning content authoring application, initially released in 1990 by Asymetrix Corporation, now SumTotal Systems.
This is very similar to Microsoft PowerPoint’s use of the metaphor where presentations contain various slides.
[7] The final version of ToolBook, 11.5, was released in December 2012.
SumTotal Systems ended all sales and support of Toolbook on December 31, 2021.
[8] ToolBook allows for the creation of applications and training materials for Windows and/or the web.