QTodoTxt

qtodotxt is a fast, cross-platform todo.txt GUI written in Python.
Main features:
- Hyperlinks: recognized automatically if starting with 'http://', 'https://', 'ftp://', etc.

- Sorting: done automatically at first on priorities and within this order alphabetically.
- Due dates format: "due:YYYY-MM-DD" (other formats can lead to strange behaviour).
- Due dates color: red = today or past; orange = within the following week; black = more than one week.