jdotxt
jdotxt is an open source, cross-platform Desktop tool for managing your todo list.
22 Alternatives To jdotxt
Calcurse
Calcurse is a calendar and scheduling application for the command line.
Nozbe
Nozbe - to-do, task, project and time management productivity gtd getting things done online application with software for Apple iPhone iPad Android Mac Windows Linux
Top Task List
Top Task List is simple, elegant and responsive task organizer.
topydo
A command-line todo list application using the todo.txt format.