The Guide - The Guide is a two-pane outliner - a program that allows you to arrange text notes in a tree-like...
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Monkkee - Keep a private journal securely on the Internet – to provide a convenient user experience your...
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Scrapbox - A new style of note-taking that lets you create, discuss, and learn together in one self-organizing space.
CherryTree - A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.