RedNotebook is described as 'Graphical diary and journal helping you keep track of notes and thoughts. It includes a calendar navigation, customizable templates, export functionality and word clouds. You can also format, tag and search your entries' and is a very popular Note-taking tool in the office & productivity category. There are more than 100 alternatives to RedNotebook for a variety of platforms, including Windows, Mac, Android, Linux and iPhone apps. The best RedNotebook alternative is Zim, which is both free and Open Source. Other great apps like RedNotebook are Trilium Notes, CherryTree, Markor and UpNote.
Very versatile and well designed. Worth trying.