hierarchical note jotter - organise your ideas, notes, facts in a tree
Free flexible open source todo manager featuring hierarchical tasks
Sticky notes/post-it application for linux
Manage events and tasks using simple text files.
Better Late Than Never (BLTN), a task manager using Remember the Milk
A GTD-inspired ToDo list manager that tells you what to do next!
Selenio helps you manage your reminders in an extremely quick way