NoteTask is a fast, clean, and simple note taking application that presents your text as tasks, completed tasks, and sections. By default it recognizes lines starting with hyphen and spacebar as tasks, and lines starting with exclamation mark as completed tasks. (You can customize this behavior.)
You can think of NoteTask as a simplified version of the popular Mac app (and iOS app), “TaskPaper” by Hog Bay Software, plus Simplenote syncing. We position NoteTask not as a complicated task management system to replace famous Things or OmniFocus but as a simple note app plus simpler task solution.