Guide is an application that allows you create documents ("guides") which inherently have a tree (which you can modify as you please) and text associated with each node of the tree. Developed by Mahadevan R
License: Open Source
Lumio is primarily focused on creating interactive lessons and engaging students through multimedia, while The Guide emphasizes comprehensive instructional design with customizable templates and analytics. Lumio is more user-friendly for teachers, whereas The Guide offers more detailed content creation tools.