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
Zim is a desktop wiki-style note-taking application that focuses on organization and collaboration, while The Guide is more of a content creation and task management tool with offline access. Both have user-friendly interfaces but cater to different use cases, with Zim being better for structured notes and The Guide for project management.