Todo.txt is an open source todo list manager, created by Gina
Trapani, that works with plain text files. Todo.txt has a command-line
interface. However, since the file format is plain text, you can also edit your
tasks with any text editor. Todo.txt Touch is a version of Todo.txt for the
Android platform. Todo.txt Touch uses a todo.txt file that lives in your
Dropbox folder. %(name)s can import from and export to that todo.txt
file.