Bike Outliner
Structured & focused writing
Use Bike to think, write, organize. Make lists, take notes, create documents. Bike's an unusually fast outliner designed for your Mac.
TaskPaper
Plain text to-do lists
Make lists and get organized. TaskPaper is a plain text to-do list app that’s surprisingly adept. Getting things done since 2006. TaskPaper is now hosted on its own website:
WriteRoom
Distraction free writing
Write without distractions. WriteRoom is a full screen writing environment app. Unlike the cluttered word processors you’re used to, WriteRoom lets you focus on writing. WriteRoom is now hosted on the Mac App Store: